Question

During which phase of the cardiac cycle is the pressure in the left ventricle higher than the pressure in the aorta?

Answer 1

Answer:

During the last part of the systolic phase, called ejection phase, the pressure in the left ventricle is higher than the pressure in the aorta.

Explanation:

During the ejection phase, the pressure in the left ventricle is higher than in the aorta, this enables the sigmoid valve to open. Once it opens, the blood will flow from the left ventricle into the aorta. This way, the pressure in the left ventricle will progressively decrease and the pressure in the aorta will increase until both pressures are equal and the valve closes.