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Chest pain that occurs when an area of the heart muscle does not receive enough oxygen-rich blood.

 The largest artery in the body, it receives blood from the heart that has been oxygenated in the lungs, and delivers this blood to the body and brain.

 A progressive disease that affects the aortic valve of the heart.

 The heart valve that regulates the one-way flow of blood from the left ventricle to the aorta.

 The blood vessels that carry oxygen-rich blood away from the heart and lungs.

 The two upper chambers of the heart that receive blood returning from the body.

 A procedure performed to open a narrowed heart valve using a thin tube called a catheter with a small balloon at its tip. The catheter is inserted through a small incision in the groin and then threaded up to the opening of the narrowed heart valve. The balloon is then inflated to stretch the valve open and relieve valve obstruction.

 A valve that has two leaflets that regulate the flow of blood. A normal aortic valve has three leaflets.

 A disease state in which calcium from the blood collects in the body tissues. When this occurs on the leaflets of the heart’s valves, it may cause them to harden and reduce their ability to open and close properly.