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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
Complete the following sentence with appropriate word:
The sequence of one systole followed by one diastole is termed as the ___________.
Long answer question:
A man’s pulse rate is 68 and cardiac output is 5500 cm3 . Find the stroke volume.
Which of the following correctly represents the flow of blood in closed blood vascular system?
In cardiac cycle for how Long atrial systole lasts?
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.
What is Cardiac output?
Give reason:
The wall of left ventricle is thicker than right ventricle
What are the time durations for each of the following events in cardiac cycle?
- Atrial systole
- Atrial diastole
- Ventricular systole
- Ventricular diastole
