Learn about the anatomy of the heart and how its chambers, valves, and vessels work together to maintain effective blood circulation throughout the body to sustain life.

T he heart is the body's hardest-working muscle. Whether you're awake or asleep, or exercising or resting, your heart is always at work. It pumps blood through arteries to deliver oxygen to organs and ...

How Does Blood Flow Through the Heart? The right and left sides of the heart work together. The pattern described below is repeated over and over, causing blood to flow continuously to the heart ...

Heart murmurs are extra sounds that accompany a heartbeat These are usually harmless or innocent or abnormal Here’s how to ...

The circulatory system includes the heart, blood vessels and blood, and is vital for fighting diseases and maintaining homeostasis (proper temperature and pH balance). The system's main function ...

The heart is a muscle that pumps blood throughout the body. ... This action increases blood flow and releases excess heat through the skin. Summary. Muscles play a part in all bodily functions, ...

When the heart struggles to effectively pump blood, the extremities often show signs first. This occurs because the body prioritizes blood flow to vital organs during cardiovascular stress ...

Heart valves allow blood to flow one way and prevent it from flowing in the wrong direction. The tricuspid valve controls blood flow between the right atrium and right ventricle. The bicuspid or ...

New technology revolutionizes heart transplants 02:14. It was moments with his kids that made Jason Banner decide to take a chance on a new method of heart transplantation.