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प्रश्न
Draw diagrammatic representation of cardiac cycle. Explain ventricular systole.
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उत्तर
Diagrammatic representation of Cardiac Cycle
Ventricular systole (VS):
- The impulse originating from SA node reaches the AV node and it gets excited. The AV node sends impulses to bundle of His and from bundle of His to Purkinje fibers. Purkinje fibers further spread impulses all over the wall of ventricles.
- Due to this, ventricular wall contracts causing ventricular systole. During ventricular systole, right ventricle pumps deoxygenated blood into pulmonary trunk and left ventricle pumps oxygenated blood into aorta.
- During ventricular systole the cuspid valves close both the atrioventricular apertures preventing blood flow into atria (lubb sound is heard).
संबंधित प्रश्न
Long answer question:
If the duration of the atrial systole is 0.1 sec and that of complete diastole is 0.4 sec, then how does one cardiac cycle complete in 0.8 sec?
The wall of the human heart is made of ______
In cardiac cycle for how Long atrial systole lasts?
With which of the following event the cardiac cycle starts?
The longest phase of cardiac cycle is ____________.
The ventricular diastole has 0 duration of seconds.
What is the contraction phase of auricles called?
Name the two valves that open during this phase.
In which one of the following pair, the two items mean one and the same thing?
What are the time durations for each of the following events in cardiac cycle?
- Atrial systole
- Atrial diastole
- Ventricular systole
- Ventricular diastole
