Atrial Contractions

themotivatedone asked:

a) bring right ventricular walls closer together during contraction

b) pull the semilunar valves open to allow ventricular ejection

c) pull the AV valves open during atrial systole

d) prevent ballooning of AV valves leaflets back into the atria during ventricular systole, and to prevent AV valvular regurgitation

Question posted courtesy of: Gerald