During the isovolumetric contraction period of the cardiac cycle,

A) AV and semilunar valves are closed.
B) the atria are contracted.
C) ventricular volume increases.
D) blood is pumped into the large arteries.
E) pressure in the ventricles decreases.

Isovolumetric Contraction

A phase of the cardiac cycle where the ventricles contract with no change in volume, occurring between the closure of the atrioventricular valves and the opening of the semilunar valves.

Semilunar Valves

Heart valves located at the bases of the large arteries that leave the heart; they prevent blood from flowing back into the heart.

AV Valves

The atrioventricular valves, consisting of the tricuspid and mitral valves, regulate blood flow from the atria to the ventricles in the heart.