Figure 20-2 Cardiac Cycle
Use Figure 20-2 to answer the following question:
-What occurs at "A" on the graph?
A)semilunar valve opens
B)semilunar valve closes
C)AV valve opens
D)AV valve closes
E)end systolic volume

Question

Figure 20-2 Cardiac Cycle
Use Figure 20-2 to answer the following question:
-What occurs at "A" on the graph?
A)semilunar valve opens 
B)semilunar valve closes 
C)AV valve opens 
D)AV valve closes 
E)end systolic volume

Quizplus · Accepted Answer

At point "A" on the graph, the semilunar valve opens, allowing blood to be ejected from the ventricles into the arteries during systole.