The duration of cardiac cycle is–

(1) 0.8 second

(2) 0.5 second

(3) 0.3 second

(4) 0.4 second

The pumping pressure is also known as ______ and the resting pressure is also known as ______

(1) systolic pressure, diastolic pressure

(2) diastolic pressure, systolic pressure

(3) normal pressure, abnormal pressure

(4) abnormal pressure, normal pressure

Doctors use a stethoscope to hear the sounds produced during each cardiac cycle. The

second sound is heard when

1. AV valves open up

2. Ventricular walls vibrate due to gushing in of blood from atria

3. Semilunar valves close down after the blood flows into vessels from ventricles

4. AV node receives the signal from SA node

The pumping pressure of healthy heart is

(1) 120 mmHg

(2) 80 mmHg

(3) 140 mmHg

(4) 90 mmHg

Which of the following statement is true?

1.  Cardiac output of an athlete is much lower than that of an ordinary man.

2.  In each minute a single cardiac cycle is performed.

3.  ECG are of no clinical diagnostic significance.

4.  Cardiac cycle includes Auricular systole, ventricular systole, and joint diastole/complete diastole.

When the heart beats, the familiar lub-dup
sound occurs as the valves of the heart _____.

1. open

2. close

3. expand

4. contract

If the strength of ventricular contraction increases then it will cause

(1) increase in Heart beat rate

(2) increase in cardiac output

(3) reduced supply of oxygen

(4) both (1) and (2)

The tricuspid and bicuspid Valves are closed because of

(1) Atrial systole

(2) Attempted backflow of blood into the atria

(3) Ventricular relaxation

(4) Ventricular filling

The second heart sound during the cardiac cycle is produced by the:

1. Simultaneous opening of the atrioventricular valves

2. Simultaneous closure of the atrioventricular valves

3. Simultaneous opening of the semilunar valves

4. Simultaneous closure of the semilunar valves

Consider the following events during a cardiac cycle:
I. Closure of the AV valves
II. Opening of the semilunar valves

These events occur during:

1. Atrial diastole

2. Atrial systole

3. Ventricular diastole

4. Ventricular systole