Figure 20-2 Cardiac Cycle

Multiple Choice

Figure 20-2 Cardiac Cycle

Use Figure 20-2 to answer the following questions:
-What occurs at the area labeled "C" on the graph?

A) AV valve opens.
B) AV valve closes.
C) Ventricular filling begins.
D) Semilunar valve closes.
E) Semilunar valve opens.