Some changes in the heart and blood vessels normally occur with age, but many others are modifiable factors that, if not treated, can lead to heart disease.
BACKGROUND
The heart has two sides. The right side pumps blood to the lungs to receive oxygen and get rid of carbon dioxide. The left side pumps oxygen-rich blood to the body.
Blood flows out of the heart through arteries, which branch out and get smaller and smaller as they go into the tissues. In the tissues, they become tiny capillaries. Read More »
