Medical Physics and Biophysics Chapter 1 Quiz

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What is the primary focus of biophysics?

Physics of large biomolecules and viruses (correct)

Medical applications of lasers

Diagnosis and treatment of disease and injury

Use of radiation in medicine

Which branch of physics involves the use of physical agents like manipulation and heat in treating diseases?

Physical medicine (correct)

Radiological physics

Physical therapy

Biophysics

What is the primary difference between medical physics and biophysics?

Medical physics involves the physics of viruses

Biophysics primarily involves the physics of viruses and large biomolecules (correct)

Biophysics focuses on the physics of the human body

Medical physics deals with large biomolecules

In which field would you find the study of transport of material across cell membranes?

Biophysics Signup and view all the answers

What is one application of physics mentioned in relation to the stethoscope?

Diagnosis of diseases Signup and view all the answers

Which field within medical physics involves the use of radionuclides in medicine?

Radiological physics Signup and view all the answers

What is the most common method of indicating pressure in medicine?

Measuring by the height of a column of mercury Signup and view all the answers

Which unit is used for measuring pressure in the SI system?

Pascal Signup and view all the answers

What does 'stress' refer to in the context of a solid material?

Force per unit area Signup and view all the answers

What is the equation to calculate pressure under a column of liquid?

$P = \rhogh$ Signup and view all the answers

What does absolute pressure represent?

Pressure reading with atmospheric pressure Signup and view all the answers

What is gauge pressure equal to?

$\text{absolute pressure} - \text{atmospheric pressure}$ Signup and view all the answers

What is the purpose of a manometer?

To measure both positive and negative pressures Signup and view all the answers

Which fluid is commonly used in a manometer to measure pressure?

Mercury Signup and view all the answers

What is the main difference between a mercury-type sphygmomanometer and an aneroid-type sphygmomanometer?

The way pressure is indicated Signup and view all the answers

What happens to the fluid levels in a U-shaped manometer when measuring pressure?

They change until the difference in levels equals the pressure Signup and view all the answers

How does a sphygmomanometer measure blood pressure?

By changing the shape of a flexible container Signup and view all the answers

What is the purpose of cerebrospinal fluid (CSF) in the brain?

Cushioning and protecting the brain Signup and view all the answers

What is the main reason behind the bends (decompression sickness) in divers?

Formation of bubbles in the tissues due to sudden decrease in pressure during ascent Signup and view all the answers

According to Henry's law, why does more nitrogen get dissolved in the blood and tissues as a diver goes deeper?

Proportional to the partial pressure of nitrogen in contact with the liquid Signup and view all the answers

How does Hyperbaric Oxygen Therapy (HOT) help in treating gas gangrene patients?

The bacillus causing gas gangrene dies due to the presence of oxygen Signup and view all the answers

Why do victims of carbon monoxide poisoning have difficulty getting enough oxygen to their tissues?

Carbon monoxide binds to hemoglobin, preventing oxygen transport Signup and view all the answers

What happens when a diver ascends too quickly?

Bubbles form in the tissues and joints due to sudden decrease in pressure Signup and view all the answers

How does the amount of gas dissolved in a liquid change according to Henry's law?

Proportional to the partial pressure of the gas Signup and view all the answers

According to Boyle's law, what is constant for a fixed quantity of gas at a fixed temperature?

Pressure Signup and view all the answers

What part of the body contains air cavities that can be affected by sudden pressure changes?

Middle ear Signup and view all the answers