Careiac Cycle

Question 0

Systole

Answer 0

Ventricular contraction. Starts with closure of AV valves isovolumetric contraction. Ends with closure of semilunar valves. Isovolumetric relaxation. 40 percent of cardiac cycle

Question 1

Calculate length of cardiac cycle in milliseconds for 72 bpm

Answer 1

1/72=.014 min/beat x60sec/min=.833sec=833 msec

Question 2

Atrial contraction occurs in

Answer 2

Diastole