Question

What is meant by iso-volumetric systole?

(a) The time duration between the closing and opening of AV valves

(b) The time duration between the closing and opening of semilunar valves

(c) The time duration between the closing of AV valves and opening of semilunar valves

(d) The time duration between the closing of semilunar valves and the opening of AV valves

This question was posed to me in class test.

The above asked question is from ECG in section Body Fluids and Circulation of Biology – Class 11

Answer 1

Correct option is (c) The time duration between the closing of AV valves and opening of semilunar valves

Best explanation: The time duration between the closing of AV valves and the opening of semilunar valves is known as iso-volumetric systole. The time duration between the closing of semilunar valves and the opening of AV valves is known as iso-volumetric diastole.