Question

A human heart has four chambers and four valves to regulate the process of blood circulation in the body. What kind of phases would occur when blood is supplied to Aorta and Pulmonary Artery from the chambers of the heart?

Options

• Atrial systole and ventricular diastole.

• Ventricular systole and Atrial diastole.

• Right ventricular systole and left ventricular diastole.

• Left atrial systole and right atrial diastole.

Answer 1

Ventricular systole and Atrial diastole.

Explanation:

During the ventricular systole phase, the ventricles contract and push blood into the aorta (left ventricle) and pulmonary artery (right ventricle). Atrial diastole occurs when the atria relax and fill with blood from the veins. The atria are not contracting at this time.