00:00Like all organs in the body, the heart needs a constant supply of blood.
00:09This is supplied by the coronary arteries.
00:14These arteries wrap around the outside of the heart.
00:20Coronary artery disease is caused by plaque buildup in the wall of the coronary arteries.
00:28The plaque is made up of cholesterol deposits.
00:32That causes the inside of the arteries to narrow over time.
00:42A coronary angioplasty is a procedure used to widen blocked or narrowed coronary arteries
00:49without open heart surgery.
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