Quantitative Physiology Exam 2 Practice

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Practice for the QP exam multiple choice questions!

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Jimmy

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Quantitative Physiology Exam 2 Practice


Froggy Jumps Quantitative Physiology Exam 2 PracticeVersion en ligne Practice for the QP exam multiple choice questions! par Jimmy 1 Which factor most directly determines the rate of venous return to the heart at steady state? a Heart rate b Total peripheral resistance c Mean systemic filling pressure 2 According to Laplace’s law, what happens to left ventricular wall stress if ventricular radius increases while wall thickness remains constant? a Wall stress decreases because wall curvature increases b Wall stress increases because tension must balance higher pressure over a larger area c Wall stress remains constant because pressure is unchanged 3 Which of the following would cause a rightward shift of the oxygen–hemoglobin dissociation curve? a Decreased CO₂ and decreased temperature b Increased 2,3-DPG and decreased pH c Decreased temperature and increased pH 4 The plateau phase of the ventricular action potential is primarily maintained by: a Inward sodium current through fast Na⁺ channels b Outward potassium current through transient K⁺ channels c Inward calcium current through L-type Ca²⁺ channels 5 During quiet breathing at rest, which of the following is true about alveolar pressure (PA) at the end of a normal expiration? (PB = barometric pressure) a PA > PB, so air flows out b PA < PB, so air flows in c PA = PB, so no airflow occurs 6 An increase in afterload without a change in contractility or preload will most likely produce which of the following changes in the pressure–volume loop? a Decrease in end-systolic pressure b Decrease in stroke volume c Increase in end-diastolic volume 7 Which structure delays electrical conduction between the atria and ventricles to allow complete atrial contraction before ventricular systole? a Purkinje fibers b SA node c AV node 8 What happens to arterial PCO₂ during hyperventilation (increased alveolar ventilation without increased CO₂ production)? a Increases because diffusion gradient decreases b Decreases because CO₂ is removed faster than it is produced c Remains constant because production equals elimination 9 During exercise, which of the following changes occurs to maintain increased oxygen delivery to working muscles? a Rightward shift of the oxygen–hemoglobin dissociation curve b Leftward shift of the oxygen–hemoglobin dissociation curve c Increased venous oxygen content due to higher extraction efficiency 10 Which of the following best explains why small airways contribute little to total airway resistance despite their narrow diameters? a They have lower air velocity and are arranged in parallel, increasing total cross-sectional area b They are more compliant and expand with each breath, increasing velocity c They have laminar flow with high Reynolds numbers that lower resistance

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Quantitative Physiology Exam 2 Practice

Froggy Jumps

À propos de cette activité

Créé par

Téléchargez la version pour jouer sur papier

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Quantitative Physiology Exam 2 PracticeVersion en ligne

par Jimmy

Which factor most directly determines the rate of venous return to the heart at steady state?

According to Laplace’s law, what happens to left ventricular wall stress if ventricular radius increases while wall thickness remains constant?

Which of the following would cause a rightward shift of the oxygen–hemoglobin dissociation curve?

The plateau phase of the ventricular action potential is primarily maintained by:

During quiet breathing at rest, which of the following is true about alveolar pressure (PA) at the end of a normal expiration? (PB = barometric pressure)

An increase in afterload without a change in contractility or preload will most likely produce which of the following changes in the pressure–volume loop?

Which structure delays electrical conduction between the atria and ventricles to allow complete atrial contraction before ventricular systole?

What happens to arterial PCO₂ during hyperventilation (increased alveolar ventilation without increased CO₂ production)?

During exercise, which of the following changes occurs to maintain increased oxygen delivery to working muscles?

Which of the following best explains why small airways contribute little to total airway resistance despite their narrow diameters?