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MCQS - Cardiac – PHYSIOLOGY Questions * Answers(RATED A+) $13.49   Add to cart

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MCQS - Cardiac – PHYSIOLOGY Questions * Answers(RATED A+)

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WITH regard to resistance in the cardiovascular system, the parameter with the largest effect is: a) vessel length b) radius c) heart rate d) viscosity e) pressure - ANSWERb) radius An increase in cardiac sympathetic activity would most likely and immediately: a) increase stroke volume b)...

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  • October 3, 2024
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  • MCQS - Cardiac – PHYSIOLOGY
  • MCQS - Cardiac – PHYSIOLOGY
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MCQS - Cardiac – PHYSIOLOGY Questions *
Answers(RATED A+)


Wtih regard to resistance in the cardiovascular system, the parameter with the largest effect is:

a) vessel length

b) radius

c) heart rate

d) viscosity

e) pressure - ANSWERb) radius



An increase in cardiac sympathetic activity would most likely and immediately:

a) increase stroke volume

b) decrease inotropy

c) decrease chronotropy

d) increase pulmonary pressure

e) increase angiotensin II levels - ANSWERa) increase stroke volume



The component of the conduction system providing the only electrical connection between the atria
and the ventricles is the: a) R wave

b) ECG

c) atrioventricular bundle

d) sinoatrial node

e) Purkinje fibres - ANSWERc) atrioventricular bundle



With regards to the Frank-Starling law of the heart, an increase in venous return to the heart will
result in:

a) increased sympathetic activity

b) an increase in end diastolic volume

, c) decreased cardiac output

d) a decrease in stroke volume

e) decreased angiotensin - ANSWERb



Electrical stimulation of the vagus nerve would result in:

a) tachycardia

b) decreased inotropy

c) increased cardiac output

d) bradycardia

e) activation of arterial baroreceptors - ANSWERd) bradycardia



A decrease in arterial blood pressure would most likely and immediately lead to:

a) increased afterload

b) decreased afterload

c) increased stroke volume

d) vasodilation

e) a decrease in sympathetic nerve activity - ANSWERb



An increase in blood pressure results in:

a) decreased firing rate in the aortic baroreceptor nerve

b) increased heart rate

c) activation of chemoreceptors

d) an increase in sympathetic nerve activity

e) increased firing rate in the aortic baroreceptor nerve - ANSWERe



In terms of the structural organisation of the cardiovascular system, the factor contributing most to
blood pressure is:

a) angiotensin II

b) the parallel arrangement of the vascular beds

c) low resistance in the arterioles

d) the serial arrangement of the vascular beds

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