Cardiac Cycle

Q.

The cardiac cycle is the sequence of events that occurs when the heart beats. In the __(i)_, the heart ventricles ___(ii)___ and helps fill the heart with blood. In the __(iii)_____ the ventricles ___ _(iv)____and pump the blood to the body through the arteries.

1. (i) Diastole phase, (ii) Relax, (iii) Systole phase, (iv) Contract

2. (i)Systole phase, (ii)Contract, (iii) Diastole phase, (iv) Relax

3. (i)Diastole phase, (ii) Contract, (iii)Systole phase, (iv) Relax

4. (i) Systole phase, (ii) Relax, (iii)Diastole phase, (iv)Contract

Q.

Which one of the following is not syncytial?

1. Smooth muscle

2. Cardiac muscle

3. Interstitial muscle

4. Skeletal muscle

Q. During the systole phase of cardiac cycle, blood .

1. leaves the heart
2. rests in the heart
3. returns to the heart
4. enters the heart

Q. briefly describe the three events in cardiac cycle in humans

Q. In the first phase of the cardiac cycle when both the atria are filled with blood, an action potential is generated by the SA node and then the atria contract. This is called as ________________.

1. atrial systole
2. atrial diastole
3. ventricular systole
4. ventricular diastole

Q. Arrange the following events in the correct order.

I. Atrial systole
II. Ventricular diastole
III. Joint diastole
IV. Ventricular systole
V. Atrial diastole

1. II, III, I, IV, V
2. III, I, IV, V, II
3. III, IV, I, V, II
4. I, II, III, IV, V

Q. When spring came, it was still winter in the garden. What does winter stand for or indicate here? Winter has been presented like a story with its own characters and their activities. Describe the story in your own words.

Q.

During the systolic phase of cardiac cycle, blood _____________.

1. leaves the heart

2. rests in the heart

3. returns to the heart

4. enters the heart

Q. State whether the following statements are true or false.
During the refractory period between ventricular contraction and atrial contraction, the heart is in diastole.

1. True
2. False

Q.

The steps of the cardiac cycle in sequence after atrial systole _______.

1. Isovolumic contraction, isovolumic relaxation, ejection, passive ventricular filling, active ventricular filling.

2. Isovolumic relaxation, isovolumic contraction, ejection, passive ventricular filling, active ventricular filling.

3. Isovolumic contraction, ejection, isovolumic relaxation, passive ventricular filling, active ventricular filling.

4. Isovolumic contraction, ejection, isovolumic relaxation, active ventricular filling, passive ventricular filling.

Q.

Define a cardiac cycle and the cardiac output.

Q.

What is:-

a) Palpatory method of measuring blood pressure.

b) Auscultatory method of measuring blood pressure.?

Q. The duration of a cardiac cycle is

1. 0.6 sec
2. 0.8 sec
3. 0.9 sec
4. 0.7 sec