MCDB (VISCERAL PHYSIOLOGY). RESEARCH BASED QUESTIONS AND ANSWERS. UPDATED FOR 2024/2025

MCDB (VISCERAL PHYSIOLOGY). RESEARCH BASED
QUESTIONS AND ANSWERS. UPDATED FOR 2024/2025
1. Rapid Calcium influx occurs during which phase of the
rhythmic action potential? phase 0
2. Sympathetic stimulation will cause which of the following? -
cutaneous vasoconstriction
- coronary vasodilation
3. the Rate of impulse generation is fastest in which of the
following? SA Node
4. a weak ventricular myocardium can result in? - decrease in
stroke volume
- decrease in cardiac output
5. Arteriolar constriction is mediated by vascular : alpha-
adrenergic receptors
6. The Frank-Starling Law of the heart best correlates with
which of the following statements? Left ventricular stroke
volume will increase when systematic venous return increases.
7. Which of the following is NOT a vasoactive substance? Renin
8. Which of the following statements is correct regarding
venous return? exercise will cause venous return to increase
9. Sensory signals from the baroreceptors in the carotid sinus
are carried to the nucleus of the solitary tract using which of the
following fibers? Ascending fibers of CN IX
10. The substance that increases blood volume by retaining
sodium in the ECF is which of the following? aldosterone
1 1. Myocardial contractility (force of contractions) depends
upon adequate concentration of which of the following cations?
calcium
12. Rapid Repolarization phase of the plateau action potential
occurs due to which of the following events? potassium ion efflux