Podcast
Questions and Answers
According to Poiseuille's law, which factor is directly related to resistance?
According to Poiseuille's law, which factor is directly related to resistance?
- Viscosity (correct)
- Length
- Radius
- Flow rate
Which factor is inversely related to resistance according to Poiseuille's law?
Which factor is inversely related to resistance according to Poiseuille's law?
- Flow rate
- Length
- Viscosity
- Radius (correct)
What happens to resistance when the radius of a blood vessel increases?
What happens to resistance when the radius of a blood vessel increases?
- Resistance decreases (correct)
- Resistance cannot be determined
- Resistance increases
- Resistance stays the same
What happens to resistance when the radius of a blood vessel decreases?
What happens to resistance when the radius of a blood vessel decreases?
Which of the following is NOT a function of the lymphatic system?
Which of the following is NOT a function of the lymphatic system?
What is the term for tissue swelling caused by the accumulation of excess fluid in the lymph?
What is the term for tissue swelling caused by the accumulation of excess fluid in the lymph?
Which pressure drives filtration, moving plasma from the capillary to the tissues?
Which pressure drives filtration, moving plasma from the capillary to the tissues?
What is the role of osmotic pressure in capillary exchange?
What is the role of osmotic pressure in capillary exchange?
Which blood vessels conduct blood away from the heart?
Which blood vessels conduct blood away from the heart?
Which blood pressure reading indicates hypertension?
Which blood pressure reading indicates hypertension?
What is the driving force of blood from and back to the heart?
What is the driving force of blood from and back to the heart?
What is the primary factor that affects the flow of blood in the circulatory system?
What is the primary factor that affects the flow of blood in the circulatory system?
Which chambers of the heart are responsible for receiving blood?
Which chambers of the heart are responsible for receiving blood?
What is the equation for total lung capacity (TLC)?
What is the equation for total lung capacity (TLC)?
What is the relationship between resistance and flow in a fluid system?
What is the relationship between resistance and flow in a fluid system?
What is the function of vasoconstriction in blood vessels?
What is the function of vasoconstriction in blood vessels?
Which type of capillary has the largest fenestrations and is the most permeable?
Which type of capillary has the largest fenestrations and is the most permeable?
What is the formula for velocity of blood through capillaries?
What is the formula for velocity of blood through capillaries?
Which receptors send constant signals to the medulla through cranial nerve 9?
Which receptors send constant signals to the medulla through cranial nerve 9?
What is the formula for mean arterial pressure (MAP)?
What is the formula for mean arterial pressure (MAP)?
Which of the following is responsible for maintaining the tension that keeps the lungs inflated?
Which of the following is responsible for maintaining the tension that keeps the lungs inflated?
Which of the following is NOT a part of the muco-ciliary escalator?
Which of the following is NOT a part of the muco-ciliary escalator?
According to Boyle's law, what happens to the pressure of a gas if the volume of the container decreases?
According to Boyle's law, what happens to the pressure of a gas if the volume of the container decreases?
What is the functional residual capacity (FRC) of the lungs?
What is the functional residual capacity (FRC) of the lungs?
Which of the following is true about the refractory period in cardiac muscle compared to skeletal muscle?
Which of the following is true about the refractory period in cardiac muscle compared to skeletal muscle?
What is the membrane potential of autorhythmic cells during the pacemaker potential?
What is the membrane potential of autorhythmic cells during the pacemaker potential?
What happens when the ion funny channel (If channel) opens in autorhythmic cells?
What happens when the ion funny channel (If channel) opens in autorhythmic cells?
What is the role of slow potassium gates in repolarization?
What is the role of slow potassium gates in repolarization?
What is the role of the plateau phase in cardiac muscle?
What is the role of the plateau phase in cardiac muscle?
What is the resting membrane potential of autorhythmic cells?
What is the resting membrane potential of autorhythmic cells?
Which of the following is NOT a function of the lymphatic system?
Which of the following is NOT a function of the lymphatic system?
What is the driving force of blood from and back to the heart?
What is the driving force of blood from and back to the heart?
What is the primary factor that affects the flow of blood in the circulatory system?
What is the primary factor that affects the flow of blood in the circulatory system?
What happens to resistance when the radius of a blood vessel decreases?
What happens to resistance when the radius of a blood vessel decreases?
Which of the following is responsible for creating a pressure gradient in the circulatory system?
Which of the following is responsible for creating a pressure gradient in the circulatory system?
Which chambers of the heart receive blood?
Which chambers of the heart receive blood?
What is the function of vasoconstriction in blood vessels?
What is the function of vasoconstriction in blood vessels?
What is the primary factor that affects the flow of blood in the circulatory system?
What is the primary factor that affects the flow of blood in the circulatory system?
Which of the following is NOT a function of veins in the circulatory system?
Which of the following is NOT a function of veins in the circulatory system?
What is the driving force for blood flow in the circulatory system?
What is the driving force for blood flow in the circulatory system?
Which of the following is responsible for controlling resistance in the respiratory system?
Which of the following is responsible for controlling resistance in the respiratory system?
What is the formula for calculating pulse pressure (PP)?
What is the formula for calculating pulse pressure (PP)?
Which type of capillary is the least permeable and has intercellular clefts through which plasma leaks out?
Which type of capillary is the least permeable and has intercellular clefts through which plasma leaks out?
Which of the following is responsible for automatically dilating or constricting blood vessels based on the chemical needs of the surrounding tissue?
Which of the following is responsible for automatically dilating or constricting blood vessels based on the chemical needs of the surrounding tissue?
What is the formula for mean arterial pressure (MAP)?
What is the formula for mean arterial pressure (MAP)?
Which of the following compensations occurs when blood pressure drops?
Which of the following compensations occurs when blood pressure drops?
Which of the following is responsible for preventing the collapse of alveoli in the lungs?
Which of the following is responsible for preventing the collapse of alveoli in the lungs?
Which of the following is NOT a component of the respiratory membrane?
Which of the following is NOT a component of the respiratory membrane?
What is the primary function of the muco-ciliary escalator in the respiratory system?
What is the primary function of the muco-ciliary escalator in the respiratory system?
According to Boyle's law, what happens to the pressure of a gas if the volume of the container increases?
According to Boyle's law, what happens to the pressure of a gas if the volume of the container increases?
According to Poiseuille's law, which factor is directly related to resistance?
According to Poiseuille's law, which factor is directly related to resistance?
What is the role of the semilunar valves in the heart?
What is the role of the semilunar valves in the heart?
What is the main factor that affects the force of contraction in cardiac muscle?
What is the main factor that affects the force of contraction in cardiac muscle?
What is the role of the sarcoplasmic reticulum in excitation-contraction coupling in cardiac muscle?
What is the role of the sarcoplasmic reticulum in excitation-contraction coupling in cardiac muscle?
Which of the following is true about the cardiac refractory period compared to the skeletal muscle refractory period?
Which of the following is true about the cardiac refractory period compared to the skeletal muscle refractory period?
What is the membrane potential of autorhythmic cells during the pacemaker potential?
What is the membrane potential of autorhythmic cells during the pacemaker potential?
What is the role of slow potassium gates in repolarization?
What is the role of slow potassium gates in repolarization?
What is the role of the plateau phase in cardiac muscle?
What is the role of the plateau phase in cardiac muscle?
What is the primary factor that affects the flow of blood in the circulatory system?
What is the primary factor that affects the flow of blood in the circulatory system?
What happens when the ion funny channel (If channel) opens in autorhythmic cells?
What happens when the ion funny channel (If channel) opens in autorhythmic cells?
What is the resting membrane potential of autorhythmic cells?
What is the resting membrane potential of autorhythmic cells?
What happens when the ion funny channel (If channel) opens in autorhythmic cells?
What happens when the ion funny channel (If channel) opens in autorhythmic cells?
What is the role of the plateau phase in cardiac muscle?
What is the role of the plateau phase in cardiac muscle?
What is the primary factor that affects the flow of blood in the circulatory system?
What is the primary factor that affects the flow of blood in the circulatory system?
Which of the following is true about the refractory period in cardiac muscle compared to skeletal muscle?
Which of the following is true about the refractory period in cardiac muscle compared to skeletal muscle?
What is the role of the sarcoplasmic reticulum in excitation-contraction coupling in cardiac muscle?
What is the role of the sarcoplasmic reticulum in excitation-contraction coupling in cardiac muscle?
What is the function of vasoconstriction in blood vessels?
What is the function of vasoconstriction in blood vessels?
What is the membrane potential of autorhythmic cells during the pacemaker potential?
What is the membrane potential of autorhythmic cells during the pacemaker potential?
According to Boyle's law, what happens to the pressure of a gas if the volume of the container decreases?
According to Boyle's law, what happens to the pressure of a gas if the volume of the container decreases?
What happens to resistance when the radius of a blood vessel decreases?
What happens to resistance when the radius of a blood vessel decreases?
Which of the following is true about the electrical conduction system of the heart?
Which of the following is true about the electrical conduction system of the heart?
What does the P wave represent in the cardiac cycle?
What does the P wave represent in the cardiac cycle?
What is the function of the AV node in the electrical conduction system of the heart?
What is the function of the AV node in the electrical conduction system of the heart?
What is the role of the semilunar valves in the cardiac cycle?
What is the role of the semilunar valves in the cardiac cycle?
What is the average end diastolic volume (EDV) in the ventricles?
What is the average end diastolic volume (EDV) in the ventricles?
What is the primary factor that affects the force of contraction in cardiac muscle?
What is the primary factor that affects the force of contraction in cardiac muscle?
What is the average end systolic volume (ESV) in the ventricles?
What is the average end systolic volume (ESV) in the ventricles?
What is the role of the T wave in the cardiac cycle?
What is the role of the T wave in the cardiac cycle?
What is the role of isovolumic ventricular diastole in the cardiac cycle?
What is the role of isovolumic ventricular diastole in the cardiac cycle?
What is the function of the SA node in the electrical conduction system of the heart?
What is the function of the SA node in the electrical conduction system of the heart?
True or false: MAP is the driving force of blood from and back to the heart.
True or false: MAP is the driving force of blood from and back to the heart.
True or false: Veins have the highest pressure in the circulatory system.
True or false: Veins have the highest pressure in the circulatory system.
True or false: Bronchoconstriction decreases airway resistance.
True or false: Bronchoconstriction decreases airway resistance.
True or false: Oxygen and CO2 exchange occurs between alveoli and capillaries during respiration.
True or false: Oxygen and CO2 exchange occurs between alveoli and capillaries during respiration.
True or false: Lymphatic capillaries are found in the same places as circulatory capillaries.
True or false: Lymphatic capillaries are found in the same places as circulatory capillaries.
True or false: Lymph edema refers to tissue swelling due to excess fluid in the lymph.
True or false: Lymph edema refers to tissue swelling due to excess fluid in the lymph.
True or false: High blood pressure can cause lymph edema due to increased hydrostatic pressure.
True or false: High blood pressure can cause lymph edema due to increased hydrostatic pressure.
True or false: Lacteals are found in the lining of the intestines and are responsible for absorbing fats.
True or false: Lacteals are found in the lining of the intestines and are responsible for absorbing fats.
True or false: The smooth muscles surrounding the bronchioles are similar to the smooth muscles surrounding the arterioles in the circulatory system.
True or false: The smooth muscles surrounding the bronchioles are similar to the smooth muscles surrounding the arterioles in the circulatory system.
True or false: The pleural fluid between the parietal and visceral pleura creates tension that keeps the lungs inflated.
True or false: The pleural fluid between the parietal and visceral pleura creates tension that keeps the lungs inflated.
True or false: Type 2 alveolar cells secrete surfactant, which prevents alveoli from collapsing.
True or false: Type 2 alveolar cells secrete surfactant, which prevents alveoli from collapsing.
True or false: The muco-ciliary escalator functions to trap pathogens and eliminate them from the respiratory system.
True or false: The muco-ciliary escalator functions to trap pathogens and eliminate them from the respiratory system.
True or false: Osmotic pressure is higher than hydrostatic pressure at the veniole end of the capillary.
True or false: Osmotic pressure is higher than hydrostatic pressure at the veniole end of the capillary.
True or false: Fenestrated capillaries have larger intercellular clefts and fenestrations compared to continuous capillaries.
True or false: Fenestrated capillaries have larger intercellular clefts and fenestrations compared to continuous capillaries.
True or false: The velocity of blood through capillaries is the slowest due to the larger cross-sectional area compared to arterioles.
True or false: The velocity of blood through capillaries is the slowest due to the larger cross-sectional area compared to arterioles.
True or false: Baroreceptors in the carotid and aortic arch arteries send constant signals to the medulla through cranial nerve 9.
True or false: Baroreceptors in the carotid and aortic arch arteries send constant signals to the medulla through cranial nerve 9.
True or false: Increasing the radius of a blood vessel decreases resistance and increases flow.
True or false: Increasing the radius of a blood vessel decreases resistance and increases flow.
True or false: The sarcomere length is directly related to the force of contraction in cardiac muscle.
True or false: The sarcomere length is directly related to the force of contraction in cardiac muscle.
True or false: The number of crossbridges in cardiac muscle is directly related to the amount of calcium available.
True or false: The number of crossbridges in cardiac muscle is directly related to the amount of calcium available.
True or false: The plateau phase in cardiac muscle allows time for calcium to bind to troponin and prevents continuous contraction.
True or false: The plateau phase in cardiac muscle allows time for calcium to bind to troponin and prevents continuous contraction.
True or false: The SA node generates signals faster than the rest of the atrial cells.
True or false: The SA node generates signals faster than the rest of the atrial cells.
True or false: The AV node is located in the upper right atrium.
True or false: The AV node is located in the upper right atrium.
True or false: The QRS complex represents ventricular depolarization.
True or false: The QRS complex represents ventricular depolarization.
True or false: The T wave represents ventricular repolarization.
True or false: The T wave represents ventricular repolarization.
True or false: The atria contract before the ventricles.
True or false: The atria contract before the ventricles.
True or false: The end systolic volume (ESV) is the amount of blood in the ventricles after it has fully contracted.
True or false: The end systolic volume (ESV) is the amount of blood in the ventricles after it has fully contracted.
True or false: The inspiratory capacity (IC) is equal to the sum of the tidal volume (TV) and the inspiratory reserve volume (IRV).
True or false: The inspiratory capacity (IC) is equal to the sum of the tidal volume (TV) and the inspiratory reserve volume (IRV).
True or false: The functional residual capacity (FRC) is equal to the sum of the expiratory reserve volume (ERV) and the residual volume (RV).
True or false: The functional residual capacity (FRC) is equal to the sum of the expiratory reserve volume (ERV) and the residual volume (RV).
True or false: The total lung capacity (TLC) is equal to the sum of the tidal volume (TV), inspiratory reserve volume (IRV), expiratory reserve volume (ERV), and residual volume (RV).
True or false: The total lung capacity (TLC) is equal to the sum of the tidal volume (TV), inspiratory reserve volume (IRV), expiratory reserve volume (ERV), and residual volume (RV).
True or false: The pressure inside the thoracic cavity decreases during inhalation, creating a vacuum-like effect that forces air into the lungs.
True or false: The pressure inside the thoracic cavity decreases during inhalation, creating a vacuum-like effect that forces air into the lungs.
True or false: Slow potassium gates open during repolarization in cardiac cells.
True or false: Slow potassium gates open during repolarization in cardiac cells.
True or false: There is hyperpolarization during the cardiac refractory period.
True or false: There is hyperpolarization during the cardiac refractory period.
True or false: The cardiac refractory period is longer than the skeletal muscle refractory period.
True or false: The cardiac refractory period is longer than the skeletal muscle refractory period.
True or false: The plateau phase of the cardiac action potential allows for a complete contraction and relaxation of the cell.
True or false: The plateau phase of the cardiac action potential allows for a complete contraction and relaxation of the cell.
True or false: Autorhythmic cells do not have a resting membrane potential, but instead have a pacemaker potential around -60mV.
True or false: Autorhythmic cells do not have a resting membrane potential, but instead have a pacemaker potential around -60mV.
True or false: If channels (ion funny channels) open in autorhythmic cells, there is an influx of sodium that raises the membrane potential to -40mV.
True or false: If channels (ion funny channels) open in autorhythmic cells, there is an influx of sodium that raises the membrane potential to -40mV.
True or false: The total lung capacity (TLC) is equal to the sum of the tidal volume (TV), inspiratory reserve volume (IRV), expiratory reserve volume (ERV), and residual volume (RV).
True or false: The total lung capacity (TLC) is equal to the sum of the tidal volume (TV), inspiratory reserve volume (IRV), expiratory reserve volume (ERV), and residual volume (RV).
True or false: Type 2 alveolar cells secrete surfactant, which prevents alveoli from collapsing.
True or false: Type 2 alveolar cells secrete surfactant, which prevents alveoli from collapsing.
True or false: The atria contract before the ventricles.
True or false: The atria contract before the ventricles.
True or false: Osmotic pressure is higher than hydrostatic pressure at the venule end of the capillary.
True or false: Osmotic pressure is higher than hydrostatic pressure at the venule end of the capillary.
True or false: Slow potassium gates open during repolarization?
True or false: Slow potassium gates open during repolarization?
True or false: There is no hyperpolarization during repolarization?
True or false: There is no hyperpolarization during repolarization?
True or false: The cardiac refractory period is longer than the skeletal muscle refractory period?
True or false: The cardiac refractory period is longer than the skeletal muscle refractory period?
True or false: The plateau phase allows for a complete contraction and relaxation of a cell?
True or false: The plateau phase allows for a complete contraction and relaxation of a cell?
True or false: Autorhythmic cells have a resting membrane potential of -60mV?
True or false: Autorhythmic cells have a resting membrane potential of -60mV?
True or false: If channels open, there is an influx of sodium that raises the membrane potential to -40mV?
True or false: If channels open, there is an influx of sodium that raises the membrane potential to -40mV?
True or false: The plateau phase is responsible for allowing calcium to bind to troponin and prevent continuous contraction?
True or false: The plateau phase is responsible for allowing calcium to bind to troponin and prevent continuous contraction?
True or false: When the ion funny channel (If channel) opens in autorhythmic cells, there is an influx of sodium?
True or false: When the ion funny channel (If channel) opens in autorhythmic cells, there is an influx of sodium?
True or false: The atria contract before the ventricles?
True or false: The atria contract before the ventricles?
True or false: There is hyperpolarization during the cardiac refractory period?
True or false: There is hyperpolarization during the cardiac refractory period?
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