Cardiac cycle

Question 1

Systole

Answer 1

pumping phase

Herat muscle contracts

Question 2

Diastole

Answer 2

Filling phase

Heart muscle relaxes

Question 3

Atrial systole

Answer 3

0-0.1 seconds
Atria pumps blood into ventricle
Tricuspid and bicuspid valve= open
Semilunar Valves= closed
Ventricles= relaxed and in diastole

Question 4

Ventricular Systole

Answer 4

0.2-0.4
Ventricles pump blood into arteries
Tricuspid and bicuspid valves= closed
Semilunar valves= open
Atria= relaxed and in diastole

Question 5

Atrial and Ventricular Diastole

Answer 5

0.4-0.8 seconds
Both the atria and ventricles are relaxed and filling with blood
The tricuspid and bicuspid valves= open
Semilunar vales= closed

Question 6

What is the cardiac cycle

Answer 6

Heart beat
Sequence of events that occur in one full beat of the heart
0.8 seconds
Approx 72 beats a minutes