Q11 of 42 Page 104

What is the significance of time gap in the passage of action potential from sino-atrial node to the ventricle?

Time gap in the passage of action potential from sino-atrial node to the ventricle allows ventricles to relax. This causes ventricular pressure to fall leading to the closure of semilunar valves which prevents the backflow of blood into the ventricles.


More from this chapter

All 42 →
9

What physiological circumstances lead to erythroblastosis foetalis?

 10

Explain the consequences of a situation in which blood does not coagulate.

 12

How will you interpret an electrocardiogram (ECG) in which time taken in QRS complex is higher.

 1

The walls of ventricles are much thicker than atria. Explain.