When the semilunar valves are open, which of the following are occurring? (a) 2, 3, 5, 6, (b) 1, 2, 3, 7, (c) 1, 3, 5, 6, (d) 2, 4, 5, 7. ____ (1) coronary arteries fill ____ (2) AV valves are closed...

When the semilunar valves are open, which of the following are occurring?

(a) 2, 3, 5, 6,

(b) 1, 2, 3, 7,

(c) 1, 3, 5, 6,

(d) 2, 4, 5, 7.

____ (1) coronary arteries fill

____ (2) AV valves are closed

 ____ (3) ventricles are in systole

 ____ (4) ventricles are in diastole

 ____ (5) blood enters aorta

____ (6) blood enters pulmonary arteries

____ (7) atria contract