- 1(current)
Q. No.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 the gushing of blood from the atria |
| 3. | Semi-lunar valves close down after the blood flows into vessels from the ventricles |
| 4. | AV node receives a signal from SA node |
Subtopic: Â Human Heart: Cardiac Cycle |
 93%
Level 1: 80%+
NEET - 2015
Hints
Blood pressure in the mammalian aorta is maximum during:
1. systole of the left atrium
2. diastole of the right ventricle
3. systole of the left ventricle
4. diastole of the right atrium
2. diastole of the right ventricle
3. systole of the left ventricle
4. diastole of the right atrium
Subtopic: Â Human Heart: Cardiac Cycle |
 73%
Level 2: 60%+
NEET - 2015
Hints
In humans, blood passes from the post caval to the diastolic right atrium of heart due to:
1. pushing open of the venous valves
2. suction pull
3. stimulation of the sino auricular node
4. pressure difference between the caval and atrium
Subtopic: Â Human Heart: Double Circulation |Â Human Heart: Cardiac Cycle |
 57%
Level 3: 35%-60%
AIPMT - 2008
Hints
- 1(current)
Q. No.
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