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Bio Physics_Mcq 287 old question
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Bio Physics_Mcq 287 old question

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Questions and Answers

Which decay is exponential?

  • Alpha decay
  • Beta decay
  • Gama decay (correct)
  • Neutron decay

    • Signal compression does not occur in?

  • Peripheral Nervous System
  • Sensory Neurons
  • Motor Neurons
  • CNS (correct)

    • What is signal adaptation?

  • The process of amplifying a weak signal
  • The receptor adjusting to a continuous stimulus by reducing sensitivity (correct)
  • Conversion of a signal from one form to another
  • The decay of a signal over distance

    • Where are alpha particles used?

    <p>Therapeutics</p> Signup and view all the answers

    Are beta particles used in diagnostic imaging?

    <p>Only in specific conditions</p> Signup and view all the answers

    If the lumen of a vessel increases/dilates 3 times, what happens to the velocity?

    <p>It is 3 times slower</p> Signup and view all the answers

    Far point vs near point relates to which conditions?

    <p>Hyperopia vs Myopia</p> Signup and view all the answers

    What do the inner, middle, and outer ear all do?

    <p>Transmit sound</p> Signup and view all the answers

    What is the unit of resistance?

    <p>Ohm</p> Signup and view all the answers

    What does an ammeter measure?

    <p>Current</p> Signup and view all the answers

    What is the main cause of radioactivity?

    <p>Nuclear instability</p> Signup and view all the answers

    In which medical imaging technique is a tracer used?

    <p>PET</p> Signup and view all the answers

    What is the principle of an X-ray?

    <p>Ionizing radiation</p> Signup and view all the answers

    What does MRI stand for?

    <p>Magnetic Resonance Imaging</p> Signup and view all the answers

    What is the Doppler effect primarily used for in medicine?

    <p>Measuring blood flow</p> Signup and view all the answers

    Potassium channels contribute most to which membrane potential?

    <p>Resting membrane potential</p> Signup and view all the answers

    Which channels are not open during the resting state of a membrane?

    <p>Leakage channels</p> Signup and view all the answers

    The Nernst equation is used to calculate what?

    <p>Membrane potential</p> Signup and view all the answers

    What is the resistance of the renal artery typically?

    <p>0.6</p> Signup and view all the answers

    What do fluoroscopy layers primarily provide?

    <p>Dynamic imaging</p> Signup and view all the answers

    When gamma radiation goes through the body, what changes?

    <p>The nuclei of the cell and The DNA structure</p> Signup and view all the answers

    What is the lumbosacral angle typically?

    <p>40 degrees</p> Signup and view all the answers

    What happens if you stand on one leg?

    <p>7x more load than original is put on femur head</p> Signup and view all the answers

    Why is ice slippery?

    <p>Small value of friction coefficient</p> Signup and view all the answers

    What is true about stereocilia in the inner ear?

    <p>Involved in balance</p> Signup and view all the answers

    What causes spherical aberration?

    <p>Imperfect curvature of lens</p> Signup and view all the answers

    What determines viscosity in-vivo according to Poiseuille's law?

    <p>all are correct</p> Signup and view all the answers

    What does the Nernst equation calculate?

    <p>Membrane potential</p> Signup and view all the answers

    What is the main function of sodium-potassium ATPase pump?

    <p>Pumping sodium out and potassium into the cell</p> Signup and view all the answers

    What does an electrocardiogram (EKG) contain?

    <p>Heart rate variability</p> Signup and view all the answers

    What is the resistance of the renal artery typically?

    <p>0.6</p> Signup and view all the answers

    What is the lumbosacral angle typically?

    <p>40 degrees</p> Signup and view all the answers

    What happens if you stand on one leg?

    <p>7x more load than original is put on femur head</p> Signup and view all the answers

    Why is ice slippery?

    <p>Small value of friction coefficient</p> Signup and view all the answers

    What is the main cause of radioactivity?

    <p>Nuclear instability</p> Signup and view all the answers

    In which medical imaging technique is a tracer used?

    <p>PET</p> Signup and view all the answers

    What is the principle of an X-ray?

    <p>Ionizing radiation</p> Signup and view all the answers

    What does MRI stand for?

    <p>Magnetic Resonance Imaging</p> Signup and view all the answers

    What is the Doppler effect primarily used for in medicine?

    <p>Measuring blood flow</p> Signup and view all the answers

    Potassium channels contribute most to which membrane potential?

    <p>Resting membrane potential</p> Signup and view all the answers

    Which channels are not open during the resting state of a membrane?

    <p>Voltage-gated channels</p> Signup and view all the answers

    The Nernst equation is used to calculate what?

    <p>Membrane potential</p> Signup and view all the answers

    What is the resistance of the renal artery typically?

    <p>0.6</p> Signup and view all the answers

    What do fluoroscopy layers primarily provide?

    <p>Dynamic imaging</p> Signup and view all the answers

    What is true about stereocilia in the inner ear?

    <p>Involved in balance</p> Signup and view all the answers

    What is the unit of resistance?

    <p>Ohm</p> Signup and view all the answers

    What does an ammeter measure?

    <p>Current</p> Signup and view all the answers

    Are beta particles used in diagnostic imaging?

    <p>Only in specific conditions</p> Signup and view all the answers

    Where are alpha particles used?

    <p>Therapeutics</p> Signup and view all the answers

    What do the inner, middle, and outer ear all do?

    <p>Encoding signal</p> Signup and view all the answers

    Far point vs near point relates to which conditions?

    <p>Hyperopia vs Myopia</p> Signup and view all the answers

    Signal compression does not occur in?

    <p>CNS</p> Signup and view all the answers

    What is signal adaptation?

    <p>The receptor adjusting to a continuous stimulus by reducing sensitivity</p> Signup and view all the answers

    What happens to the velocity if the lumen of a vessel increases/dilates 3 times?

    <p>It is 9 times faster</p> Signup and view all the answers

    What causes turbulences in blood flow?

    <p>Higher blood pressure</p> Signup and view all the answers

    Systolic pressure is defined as what?

    <p>Pressure when aortic pressure is maximum</p> Signup and view all the answers

    What is a characteristic of myelinated fibers?

    <p>They conduct information fast</p> Signup and view all the answers

    RIA is used to measure what?

    <p>Very low concentration of hormones, drugs, and other substances</p> Signup and view all the answers

    Which radiation is hardest to absorb?

    <p>Gamma rays</p> Signup and view all the answers

    What is the unit for exposure dose?

    <p>Coulomb per kilogram</p> Signup and view all the answers

    Facilitated diffusion is characterized by what?

    <p>Not being active transport</p> Signup and view all the answers

    What generates Technetium-99?

    <p>Mb-99 molibden and Uranium decay</p> Signup and view all the answers

    What is the function of the leg abductor?

    <p>Stabilization of the body during rotation in the hip joint and Extension of the hip</p> Signup and view all the answers

    What is a cyst characterized by?

    <p>Body mass filled with fluid, anechogenic</p> Signup and view all the answers

    What causes turbulences in blood flow?

    <p>Higher blood pressure</p> Signup and view all the answers

    Systolic pressure is defined as what?

    <p>Pressure when aortic pressure is maximum</p> Signup and view all the answers

    What is a characteristic of myelinated fibers?

    <p>They conduct information fast</p> Signup and view all the answers

    RIA is used to measure what?

    <p>Very low concentration of hormones, drugs, and other substances</p> Signup and view all the answers

    Which radiation is hardest to absorb?

    <p>Protons</p> Signup and view all the answers

    What is the unit for exposure dose?

    <p>Coulomb per kilogram</p> Signup and view all the answers

    Facilitated diffusion is characterized by what?

    <p>Not being active transport</p> Signup and view all the answers

    What generates Technetium-99?

    <p>Mb-99 molibden</p> Signup and view all the answers

    What is the function of the leg abductor?

    <p>Stabilization of the body during rotation in the hip joint</p> Signup and view all the answers

    What is a cyst characterized by?

    <p>Body mass filled with fluid, anechogenic</p> Signup and view all the answers

    What property does Technetium-99m NOT have?

    <p>Has a half-life of 6 hours</p> Signup and view all the answers

    What is the primary function of the Na/K ATPase pump?

    <p>Pumping sodium out and potassium into the cell</p> Signup and view all the answers

    What does the EKG contain?

    <p>Eindhoven triangles</p> Signup and view all the answers

    What is the main cause of turbulences in blood flow?

    <p>Higher blood pressure</p> Signup and view all the answers

    What happens when you stand on one leg?

    <p>7x more load than original is put on femur head</p> Signup and view all the answers

    What is true about stereocilia in the inner ear?

    <p>Involved in balance</p> Signup and view all the answers

    What does MRI stand for?

    <p>Magnetic Resonance Imaging</p> Signup and view all the answers

    Which radiation is hardest to absorb?

    <p>Protons</p> Signup and view all the answers

    What is the function of the leg abductor?

    <p>Stabilization of the body during rotation in the hip joint</p> Signup and view all the answers

    What does an electrocardiogram (EKG) contain?

    <p>Eindhoven triangles</p> Signup and view all the answers

    What is the main function of the Na/K ATPase pump?

    <p>Pumping sodium out and potassium into the cell</p> Signup and view all the answers

    What property does Technetium-99m NOT have?

    <p>Expensive</p> Signup and view all the answers

    What is the primary function of the leg abductor?

    <p>Stabilization of the body during rotation in the hip joint</p> Signup and view all the answers

    What do fluoroscopy layers primarily provide?

    <p>Dynamic imaging</p> Signup and view all the answers

    What causes spherical aberration?

    <p>Imperfect curvature of lens</p> Signup and view all the answers

    What happens if the lumen of a vessel increases/dilates 3 times?

    <p>Velocity is 9 times faster</p> Signup and view all the answers

    What does the Nernst equation calculate?

    <p>Membrane potential</p> Signup and view all the answers

    What is the resistance of the renal artery typically?

    <p>0.6</p> Signup and view all the answers

    When gamma radiation goes through the body, what changes?

    <p>The nuclei of the cell</p> Signup and view all the answers

    What is the lumbosacral angle typically?

    <p>40 degrees</p> Signup and view all the answers

    What is the main characteristic of facilitated diffusion?

    <p>It does not require energy.</p> Signup and view all the answers

    Which element generates Technetium-99?

    <p>Mb-99 molibden</p> Signup and view all the answers

    What is the main function of the leg abductor muscle?

    <p>Stabilization of the body during rotation in the hip joint</p> Signup and view all the answers

    What is a cyst primarily characterized by?

    <p>A body mass filled with fluid, anechogenic</p> Signup and view all the answers

    What is the threshold of hearing typically?

    <p>2-3 kHz</p> Signup and view all the answers

    When will turbulence occur more likely in blood flow?

    <p>At higher Reynolds numbers</p> Signup and view all the answers

    What is the difference between X-rays and gamma rays?

    <p>Gamma rays have larger energy and lower penetration.</p> Signup and view all the answers

    What is the osmotic coefficient of albumin typically?

    <p>Less than 1</p> Signup and view all the answers

    What does the contraction of ciliary muscles affect?

    <p>The shape of the lens</p> Signup and view all the answers

    Which part of the eye is light sensitive?

    <p>Retina</p> Signup and view all the answers

    What property does Technetium-99m NOT have?

    <p>Expensive and Has a half-life of 6 hours</p> Signup and view all the answers

    What is the threshold of hearing typically?

    <p>2-3 kHz</p> Signup and view all the answers

    What happens when crystals resonate in ultrasound?

    <p>Increase in resolution</p> Signup and view all the answers

    Which method has the best resolution, CT or MRI?

    <p>CT</p> Signup and view all the answers

    What determines the lateral resolution in ultrasound?

    <p>Width of ultrasound beam</p> Signup and view all the answers

    What is the function of stereocilia in the inner ear?

    <p>Involved in balance</p> Signup and view all the answers

    What is the osmotic coefficient of albumin typically?

    <p>Higher than 1.5</p> Signup and view all the answers

    What does the contraction of ciliary muscles affect?

    <p>The shape of the lens</p> Signup and view all the answers

    Which part of the eye is light sensitive?

    <p>Retina</p> Signup and view all the answers

    What property does Technetium-99m NOT have?

    <p>Expensive</p> Signup and view all the answers

    What tests are run to see the state of serum?

    <p>Electrolyte balance and Electrophoresis both</p> Signup and view all the answers

    Plasma primarily consists of?

    <p>Proteins, electrolytes, antibodies, antigens, and hormones</p> Signup and view all the answers

    Multiple myeloma is a cancer of?

    <p>Malignant plasma cells and osteoblasts</p> Signup and view all the answers

    What is effective in treating with Vitamin C?

    <p>Iron</p> Signup and view all the answers

    How many types of insulin are there?

    <p>Two: dependent and non-dependent</p> Signup and view all the answers

    How does the ear differentiate frequencies?

    <p>Through varying sound intensities</p> Signup and view all the answers

    What is a characteristic of myelinated fibers?

    <p>They conduct information fast</p> Signup and view all the answers

    RIA is used to measure what?

    <p>Very low concentration of hormones, drugs, and other substances</p> Signup and view all the answers

    Which radiation is hardest to absorb?

    <p>Protons</p> Signup and view all the answers

    What is the unit for exposure dose?

    <p>Coulomb per kilogram</p> Signup and view all the answers

    What is not correct about Vitamin K?

    <p>It maintains the membrane potential of muscle and nerve fibers.</p> Signup and view all the answers

    In obstructive jaundice, why does the skin appear yellow?

    <p>Due to increased bilirubin in the blood.</p> Signup and view all the answers

    What action does the hip perform during walking?

    <p>It unburdens (unloads).</p> Signup and view all the answers

    What does Poiseuille’s law describe?

    <p>Flow resistance of each vessel.</p> Signup and view all the answers

    What happens when the Reynolds number exceeds the critical value?

    <p>The fluid flow becomes turbulent.</p> Signup and view all the answers

    What influences apparent blood viscosity?

    <p>Diameter of blood vessels, plasma viscosity, and hematocrit value.</p> Signup and view all the answers

    When the heart rate increases, what happens to the diastole duration?

    <p>It decreases.</p> Signup and view all the answers

    What type of interaction occurs between water molecules in liquid water?

    <p>Hydrogen bonds.</p> Signup and view all the answers

    How many synapses can a single neuron have?

    <p>Even hundreds.</p> Signup and view all the answers

    When do voltage-gated Na+ channels open?

    <p>When the membrane is depolarized.</p> Signup and view all the answers

    What is the primary contrast in MRI intensified by?

    <p>C and D are correct</p> Signup and view all the answers

    MRI signal localization is based on what?

    <p>Use of special gradients of the static magnetic field</p> Signup and view all the answers

    What does planar radiography typically adjust for clearer lung observation?

    <p>Reducing the exposure time</p> Signup and view all the answers

    What is the main function of sodium-potassium ATPase pump?

    <p>Pumping sodium out and potassium ions into the cell</p> Signup and view all the answers

    What happens during the phase of isovolumic contraction in the heart?

    <p>The mitral valve closes</p> Signup and view all the answers

    How does the diameter of blood vessels affect apparent blood viscosity?

    <p>It, along with plasma viscosity and hematocrit value, influences viscosity</p> Signup and view all the answers

    What type of interaction occurs between water molecules in liquid water?

    <p>Hydrogen bonds</p> Signup and view all the answers

    How many synapses can a single neuron have?

    <p>any number even hundreds or Thousands, depending on the neuron type</p> Signup and view all the answers

    When do voltage-gated Na+ channels open?

    <p>When the membrane is depolarized</p> Signup and view all the answers

    What allows the passage of water and ions through cell membranes?

    <p>Transport proteins</p> Signup and view all the answers

    What is the primary contrast in MRI intensified by?

    <p>Use of contrast agents</p> Signup and view all the answers

    MRI signal localization is based on what?

    <p>Use of special gradients of the static magnetic field</p> Signup and view all the answers

    What does planar radiography typically adjust for clearer lung observation?

    <p>Increasing the voltage of the anode of the X-ray tube</p> Signup and view all the answers

    What is the main function of sodium-potassium ATPase pump?

    <p>Pumping sodium out and potassium ions into the cell</p> Signup and view all the answers

    What happens during the phase of isovolumic contraction in the heart?

    <p>The mitral valve closes</p> Signup and view all the answers

    How does the diameter of blood vessels affect apparent blood viscosity?

    <p>It, along with plasma viscosity and hematocrit value, influences viscosity</p> Signup and view all the answers

    What type of interaction occurs between water molecules in liquid water?

    <p>Hydrogen bonds</p> Signup and view all the answers

    How many synapses can a single neuron have?

    <p>Even hundreds</p> Signup and view all the answers

    When do voltage-gated Na+ channels open?

    <p>Only during the resting state of the membrane</p> Signup and view all the answers

    What allows the passage of water and ions through cell membranes?

    <p>Transport proteins</p> Signup and view all the answers

    What is the primary contrast in MRI intensified by?

    <p>Use of contrast agents</p> Signup and view all the answers

    MRI signal localization is based on what?

    <p>Use of special gradients of the static magnetic field</p> Signup and view all the answers

    What does planar radiography typically adjust for clearer lung observation?

    <p>Increasing the voltage of the anode of the X-ray tube</p> Signup and view all the answers

    What is the main function of sodium-potassium ATPase pump?

    <p>Pumping sodium out and potassium ions into the cell</p> Signup and view all the answers

    What happens during the phase of isovolumic contraction in the heart?

    <p>The mitral valve closes</p> Signup and view all the answers

    What is the main function of the sodium-potassium ATPase pump?

    <p>Pumping sodium out and potassium ions into the cell</p> Signup and view all the answers

    What happens during the phase of isovolumic contraction in the heart?

    <p>The mitral valve closes</p> Signup and view all the answers

    How does the diameter of blood vessels affect apparent blood viscosity?

    <p>It, along with plasma viscosity and hematocrit value, influences viscosity</p> Signup and view all the answers

    What type of interaction occurs between water molecules in liquid water?

    <p>Hydrogen bonds</p> Signup and view all the answers

    How many synapses can a single neuron have?

    <p>Even hundreds</p> Signup and view all the answers

    When do voltage-gated Na+ channels open?

    <p>Only during the resting state of the membrane</p> Signup and view all the answers

    What allows the passage of water and ions through cell membranes?

    <p>Transport proteins</p> Signup and view all the answers

    Which is a characteristic of facilitated diffusion?

    <p>Not active transport</p> Signup and view all the answers

    What is the main cause of radioactivity?

    <p>Nuclear instability</p> Signup and view all the answers

    In which medical imaging technique is a tracer used?

    <p>PET</p> Signup and view all the answers

    What is the main cause of radioactivity?

    <p>Nuclear instability</p> Signup and view all the answers

    In which medical imaging technique is a tracer used?

    <p>PET</p> Signup and view all the answers

    What type of interaction occurs between water molecules in liquid water?

    <p>Hydrogen bonds</p> Signup and view all the answers

    How many synapses can a single neuron have?

    <p>Even hundreds</p> Signup and view all the answers

    When do voltage-gated Na+ channels open?

    <p>Only during the resting state of the membrane</p> Signup and view all the answers

    What is the main cause of radioactivity?

    <p>Nuclear instability</p> Signup and view all the answers

    In which medical imaging technique is a tracer used?

    <p>PET</p> Signup and view all the answers

    What type of interaction occurs between water molecules in liquid water?

    <p>Hydrogen bonds</p> Signup and view all the answers

    How many synapses can a single neuron have?

    <p>Even hundreds</p> Signup and view all the answers

    When do voltage-gated Na+ channels open?

    <p>Only during the resting state of the membrane</p> Signup and view all the answers

    What tests are run to see the state of serum?

    <p>Electrophoresis</p> Signup and view all the answers

    Plasma primarily consists of?

    <p>Proteins, electrolytes, antibodies, antigens, and hormones</p> Signup and view all the answers

    Multiple myeloma is a cancer of?

    <p>Malignant plasma cells and osteoblasts</p> Signup and view all the answers

    What is effective in treating with Vitamin C?

    <p>Iron</p> Signup and view all the answers

    How many types of insulin are there?

    <p>Two: dependent and non-dependent</p> Signup and view all the answers

    During emission of beta minus radiation, the mass number?

    <p>Increases by 1</p> Signup and view all the answers

    Beta minus radiation consists of?

    <p>Neutron converted to proton, creating an electron and an electron antineutrino</p> Signup and view all the answers

    Beta plus radiation consists of?

    <p>Proton is converted to neutron, creating a positron and an electron neutrino</p> Signup and view all the answers

    Compton effect refers to?

    <p>Ejection of electrons from the surface of an illuminated metal</p> Signup and view all the answers

    Which quantity is NOT extensive?

    <p>Temperature</p> Signup and view all the answers

    Which quantities are extensive?

    <p>Volume, mass, internal energy, entropy</p> Signup and view all the answers

    Which statement applies to a reversible process?

    <p>It requires no energy input</p> Signup and view all the answers

    What is the range of alpha radiation proportional to?

    <p>Its energy</p> Signup and view all the answers

    What is the main function of the sodium-potassium ATPase pump?

    <p>Pump sodium out and potassium ions into the cell</p> Signup and view all the answers

    The action potential in a cell is a consequence of?

    <p>A quick change in ion permeability</p> Signup and view all the answers

    Which factors determine the radiograph imaging contrast?

    <p>Size and kind of tissue projected to the film, quality of X-ray beam</p> Signup and view all the answers

    Annihilation radiation accompanies which type of decay?

    <p>Beta plus decay</p> Signup and view all the answers

    What does the loudness of a sound measure?

    <p>Intensity in phons or sones</p> Signup and view all the answers

    How does the compliance of the aorta compare to other blood vessels?

    <p>It is greater than other blood vessels</p> Signup and view all the answers

    What occurs when a blood vessel dilates?

    <p>Both wall stress and shear stress increase</p> Signup and view all the answers

    How is Laplace's law related to blood vessels?

    <p>It measures the tension in the vessel walls</p> Signup and view all the answers

    What part of the eye is primarily responsible for light sensitivity?

    <p>Retina</p> Signup and view all the answers

    Which part of the eye controls brightness?

    <p>Iris with pupil</p> Signup and view all the answers

    What is convergence in the context of vision?

    <p>Orientation of the eyeballs toward the studied object</p> Signup and view all the answers

    Leukemia as a consequence of ionizing radiation is an example of what type of effect?

    <p>Somatic stochastic effect</p> Signup and view all the answers

    What property does Technetium-99m NOT have?

    <p>Expensive</p> Signup and view all the answers

    What are the two factors that limit radionuclide imaging diagnostics?

    <p>Resolution and sensitivity</p> Signup and view all the answers

    What does absorbed radiation force due to inserted radionuclide depend on?

    <p>Its effective half-life</p> Signup and view all the answers

    How is recording the radio indicator distribution in the organ possible?

    <p>Using a scanner and gamma camera</p> Signup and view all the answers

    The primary contrast in MRI is intensified by what?

    <p>Use of contrast agents</p> Signup and view all the answers

    MRI signal localization is based on what?

    <p>Use of special gradients of the static magnetic field</p> Signup and view all the answers

    When observing lungs more clearly by planar X-ray imaging, what is typically adjusted?

    <p>Increasing the voltage of the anode of the X-ray tube</p> Signup and view all the answers

    What is the principle of the photoelectric effect?

    <p>Electrons are ejected from an atom when it is irradiated with photons</p> Signup and view all the answers

    In MRI, what is the role of the RF coil?

    <p>To receive the MRI signal</p> Signup and view all the answers

    Which of the following is NOT a type of radiation?

    <p>Ultraviolet rays</p> Signup and view all the answers

    What is the main function of the lens in the human eye?

    <p>To focus light on the retina</p> Signup and view all the answers

    What is the main function of the middle ear?

    <p>To transmit sound vibrations from the eardrum to the inner ear</p> Signup and view all the answers

    In electroencephalography, what is typically recorded?

    <p>Electrical activity of the brain</p> Signup and view all the answers

    What is the main advantage of using both eyes for vision?

    <p>Improving visual resolution and Increasing the field of view</p> Signup and view all the answers

    What happens when the heart rate increases?

    <p>The duration of the diastole decreases</p> Signup and view all the answers

    What characterizes the electrochemical equilibrium of ions?

    <p>The resting potential of the cell is equal to the Nernst potential of the ion</p> Signup and view all the answers

    What is the effect of doubling the amplitude on the frequency of sound?

    <p>The frequency remains the same</p> Signup and view all the answers

    How does the residual volume of the heart ventricle change during exercise?

    <p>It remains constant</p> Signup and view all the answers

    What property does Technetium-99m have?

    <p>It has a short half-life</p> Signup and view all the answers

    What is the main function of the middle ear?

    <p>Adjusting sound impedance</p> Signup and view all the answers

    What is NOT true about sound localization?

    <p>It's easier at lower frequencies</p> Signup and view all the answers

    Which tissues conduct electricity the weakest?

    <p>Adipose tissue</p> Signup and view all the answers

    What does the phase angle of a tissue type indicate?

    <p>Electrical resistance</p> Signup and view all the answers

    What is the effective dose in dosimetry?

    <p>Measure of biological damage depending on absorbed dose and radiation type</p> Signup and view all the answers

    What is the main advantage of human limbs being long levers?

    <p>They provide greater strength</p> Signup and view all the answers

    In a homogeneous electric field, what happens to a free electric dipole?

    <p>It aligns with the field</p> Signup and view all the answers

    What determines the numerical aperture of a microscope?

    <p>The refractive index of the preparation and the open angle of the lens</p> Signup and view all the answers

    What is the primary function of the middle ear?

    <p>Adjusting sound impedance</p> Signup and view all the answers

    What happens during osmosis when a cell is in a hypertonic solution?

    <p>The cell shrinks</p> Signup and view all the answers

    Which process is characterized by a neutron being converted to a proton?

    <p>Beta minus decay</p> Signup and view all the answers

    What is the main advantage of X-rays in medical imaging?

    <p>Deep tissue penetration</p> Signup and view all the answers

    What does the loudness of sound depend on?

    <p>Intensity</p> Signup and view all the answers

    How does the compliance of the aorta affect blood flow?

    <p>Increases blood flow</p> Signup and view all the answers

    What is the effect of increasing the diameter of a blood vessel?

    <p>Reduces wall stress</p> Signup and view all the answers

    Which principle explains the formation of aneurysms?

    <p>Laplace's law</p> Signup and view all the answers

    What happens to the resting potential of a neuron when potassium ion permeability increases?

    <p>It becomes more negative</p> Signup and view all the answers

    What is the primary factor affecting the speed of sound in different media?

    <p>The density of the medium</p> Signup and view all the answers

    What is osmosis?

    <p>Selective diffusion through a semipermeable membrane</p> Signup and view all the answers

    What does Bernoulli’s equation not account for in blood flow?

    <p>Blood viscosity is not negligible and The changing diameter of blood vessels</p> Signup and view all the answers

    How is the intensity of X-rays altered?

    <p>By changing the anodic voltage in the X-ray tube</p> Signup and view all the answers

    What does the phase angle of a tissue type indicate?

    <p>About 5 degrees</p> Signup and view all the answers

    What is the effective dose in dosimetry?

    <p>Measure of biological damage depending on absorbed dose and radiation type</p> Signup and view all the answers

    Which tissues conduct electricity the weakest?

    <p>Adipose tissue</p> Signup and view all the answers

    How is the function of the middle ear best described?

    <p>Transmitting sound vibrations from the eardrum to the inner ear</p> Signup and view all the answers

    What is NOT true about sound localization?

    <p>It is easier at lower frequencies</p> Signup and view all the answers

    What is one decibel?

    <p>A unit of sound intensity</p> Signup and view all the answers

    Which factor does NOT contribute to the resolution of the eye's optical system?

    <p>Improving visual resolution</p> Signup and view all the answers

    In a homogeneous electric field, what happens to a free electric dipole?

    <p>It experiences a rotational force</p> Signup and view all the answers

    What is the main assumption of the photoelectric effect?

    <p>Light is assumed to have particle characteristics and a wavelength</p> Signup and view all the answers

    What does the numerical aperture of a microscope depend on?

    <p>The refractive index of the preparation and the open angle of the lens</p> Signup and view all the answers

    What is the function of the middle ear?

    <p>Transmitting sound vibrations from the eardrum to the inner ear</p> Signup and view all the answers

    What is NOT true about sound localization?

    <p>It is easier at lower frequencies</p> Signup and view all the answers

    What is the Gaussian approximation?

    <p>It describes the distribution of light intensity</p> Signup and view all the answers

    In a state diagram (or phase diagram), what is depicted?

    <p>Equilibrium states of matter under varying conditions</p> Signup and view all the answers

    What advantage do long levers (like human limbs) provide?

    <p>They allow fast movements</p> Signup and view all the answers

    What occurs if a free electric dipole is placed in a homogeneous electric field?

    <p>It experiences a rotational force</p> Signup and view all the answers

    What is the main assumption of the photoelectric effect?

    <p>Light is assumed to have particle characteristics and a wavelength</p> Signup and view all the answers

    Which factor does NOT contribute to the resolution of the eye's optical system?

    <p>Improving visual resolution</p> Signup and view all the answers

    What is the function of the middle ear?

    <p>Transmitting sound vibrations from the eardrum to the inner ear</p> Signup and view all the answers

    What is NOT true about sound localization?

    <p>It is easier at lower frequencies</p> Signup and view all the answers

    What is one decibel?

    <p>A unit of sound intensity</p> Signup and view all the answers

    Which factor does NOT contribute to the resolution of the eye's optical system?

    <p>Improving visual resolution</p> Signup and view all the answers

    In a homogeneous electric field, what happens to a free electric dipole?

    <p>It experiences a rotational force</p> Signup and view all the answers

    What is the main assumption of the photoelectric effect?

    <p>Light is assumed to have particle characteristics and a wavelength</p> Signup and view all the answers

    What does the numerical aperture of a microscope depend on?

    <p>The refractive index of the preparation and the open angle of the lens</p> Signup and view all the answers

    What is the function of the middle ear?

    <p>Transmitting sound vibrations from the eardrum to the inner ear</p> Signup and view all the answers

    What is NOT true about sound localization?

    <p>It is easier at lower frequencies</p> Signup and view all the answers

    Signal compression does not occur in?

    <p>Motor Neurons</p> Signup and view all the answers

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