Medical Mcqs

2nd heart sound is characterized by all except______________?

(A) Due to closure of semilunar valves

(B) Is occasionally split

(C) Has longer duration than 1st heart sound

(D) Marks the onset of diastole

Submitted By: Ali Uppal


Stimulation of baroreceptors results in_______________?

(A) Increase in heart rate

(B) Decreased vagal discharge

(C) Increased sympathetic discharge

(D) Decrease in blood pressure

Submitted By: Ali Uppal


Pain is conducted by________________?

(A) A-alpha fibers

(B) A-beta fibers

(C) A-gamma fibers

(D) A-delta fibers

Submitted By: Ali Uppal


Cardiac output is a measure of______________?

(A) Peripheral resistance X tissue fluid

(B) Peripheral resistance X cardiac rate

(C) Blood pressure X cardiac rate

(D) Heart rate X blood volume

Submitted By: Ali Uppal


The largest function of the total peripheral resistance is due to _________________?

(A) Venules

(B) Arterioles

(C) Capillaries

(D) Precapillary sphincters

Submitted By: Ali Uppal


Minimum blood pressure is in_____________?

(A) Aorta

(B) Arteries

(C) Capillaries

(D) Venules

Submitted By: Ali Uppal


Consider the following statements________________?

(A) Starling’s law of heart states that increase in force of contraction is directly related to cardiac ouput

(B) Staling’s law of heart states that the force of ventricular contraction is directly related to the end diastolic volume

(C) Both A and B

(D) None of the above

Submitted By: Ali Uppal


Cardiac index is related to ______________?

(A) cardiac output and body weight

(B) Cardiac output and body surface area

(C) Cardiac output and work of the heart

(D) Stroke volume and pulse rate

Submitted By: Ali Uppal


Closure of aortic valve occurs before the following event_______________?

(A) Isovolumetric contraction

(B) Isovolumetric relaxation

(C) Pre-diastole

(D) Pre-systole

Submitted By: Ali Uppal


Fastest conducting tissue in human heart _________________?

(A) AV node

(B) SA node

(C) Bundle of His

(D) Purkinje fibers

Submitted By: Ali Uppal