Question

which of the following statements is not true regarding ventricular systole?
multiple choice
the ventricles contract.
the atrioventricular valves close.
the semilunar valves open.
the ventricles relax.
blood flows through the aorta and the pulmonary trunk.

Explanation:

During ventricular systole, the ventricles contract (not relax). When they contract, the atrioventricular valves close to prevent back - flow into the atria, and the semilunar valves open to allow blood to flow out (through the aorta and pulmonary trunk).

Answer:

The ventricles relax.