Medical Mcqs Practice Test

Question 1

First heart sound occurs during the period of________________?

Accepted Answer

C.	Isovolumetric contraction

Question 2

Cardiac output in L/min divided by heart rate equals_______________?

Accepted Answer

C.	Mean stroke volume

Question 3

Under resting condition the cardiac output is _______ L/ min ?

Accepted Answer

C.	5.25

Question 4

Conduction velocity is least in_______________?

Accepted Answer

A.	AV node

Question 5

Absolute refractory period in heart______________?

Accepted Answer

E.	All of the above

Question 6

Increased functional demand on the heart produces increased size of the myocardium by _______________?

Accepted Answer

B.	Hypertrophy

Question 7

Peripheral resistance is maximum in_______________?

Accepted Answer

C.	Arteriole

Question 8

Starling’s law of the heard________________?

Accepted Answer

C.	Explains the increase in cardiac output that occurs when venous return is increased

Question 9

All the heart valves are open during which stage of cardiac cycle __________________?

Accepted Answer

D.	None of the above

Question 10

Cardiac output is not affected by __________________?

Accepted Answer

C.	Systolic blood pressure

Question 11

Stroke output of each ventricle in normal adult is_____________?

Accepted Answer

C.	70 ml

Question 12

Normally, the rate of the heart beat in a human is determined by _________________?

Accepted Answer

C.	The sinoatrial node

Question 13

The first heart sound is produced by the_____________?

Accepted Answer

C.	Closure of the mitral and tricuspid valves