7.5 cardiac cycle

Question 1

diastole

Answer 1

• atria: relaxed; fills with blood
• ventricles: relaxed
• semi-lunar valves: closed
• atrioventricular valves: open

Question 2

atrial systole

Answer 2

• atria: contract; push blood into ventricles
• ventricles: relaxed
• semi-lunar valves: closed
• atrioventricular valves: open

Question 3

ventricular systole

Answer 3

• atria: contract; push blood into ventricles
• ventricles: relaxed
• semi-lunar valves: closed
• atrioventricular valves: open

Question 4

where are pocket valves found?

Answer 4

in veins