Question

Which of the following events takes place during diastole in the human heart?

• A. Blood leaves the ventricle
• B. Blood enters the aorta
• C. Blood enters the ventricle
• D. Blood enters the lungs

Answer 1

Answer:

C. Blood enters the ventricle

• Diastole is the phase of the cardiac cycle when the heart muscles relax aftercontraction, allowing the chambers to fill with blood.

• During diastole, the ventricles are relaxed, and blood flows from the atria into the ventricles as the atrioventricular(AV) valves (the tricuspid and mitral valves) open.

• Thus, the correct answer is Blood enters the ventricle .