The 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 ...

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.

How Does Blood Travel Through the Heart? As the heart beats, it pumps blood through a system of blood vessels, called the circulatory system. The vessels are elastic, muscular tubes that carry ...

A heart attack, or myocardial infarction, happens when oxygen-rich blood does not reach a part of the heart muscle.

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

Supporting foot circulation through appropriate exercise, avoiding prolonged immobility, and addressing risk factors like smoking has systemic cardiovascular benefits beyond foot health alone.

The tricuspid valve sits between the heart's right atrium and right ventricle. The bicuspid valve sits between the left atrium and left ventricle. Learn more.

The human muscular system is complex and has many functions in the body, like mobility and stability. Learn more about the muscular system here.

A heart perfusion scan is a common test to assess heart health if you're at high risk of coronary artery disease or have had a heart attack.

A procedure called "donation after circulatory death" could increase the number of donor hearts available.