What function does the aorta valve have in the heart?

Not Medical Advice:

The aorta valve is what keeps the blood flowing in a single direction, away from the heart to the rest of the body through arteries; it stops blood from flowing back into the heart.

Deoxygenated blood flows through the veins in the body to the heart, and then the heart pumps the rich oxygenated blood out through the aorta.

The aorta is an elastic artery; when blood is forced through it from the heart it expands. This expansion is what provides the potential energy that is used when it contracts to maintain blood pressure.

Australian doctors recently saved the lives of 11 elderly women who were suffering from aortic stenosis, or the degrading and narrowing of their main heart valve. They received synthetic heart valves without the need for open heart surgery.