This video describes how the circulatory system works, how disease can affect blood vessels (atherosclerosis), and how doctors use angiography to test for coronary artery blockage.

Sometimes used interchangeably, coronary angioplasty and stenting are actually two separate procedures. This video shows how coronary angioplasty and stenting are performed and how the two procedures differ.

Your aorta is the major artery leaving the heart, but extends to the abdomen. The video shows how a bulging out of the aorta (abdominal aortic aneurysm) is treated with a stent.

An artist's representation of what nerves and nerve bundles look like at the microscopic level. It also shows how the anatomy of a nerve allows it to transmit electrical signals and communicate with other neurons (nerves).