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 ...

Blood flows through the heart in one direction, similar to a one-way traffic system. Heart valves help control the direction of blood flow, acting like doors opening and closing with every heartbeat.

The aorta’s contribution to circulation could alleviate some of the burden placed on the heart, supporting the flow of oxygenated blood through the body.

People with type O blood enjoy a slightly lower risk of heart disease and blood clotting, but they may be more susceptible to hemorrhaging or bleeding disorders. This may be especially true after ...

How serious a leaky heart valve is depends on how much it interferes with normal blood flow through the heart. Treatments include medicines, surgical repair, or surgical replacement of the leaky ...

If you want to know how to lower your blood pressure fast and safely, the first step is understanding what causes high blood pressure.

Aortic stenosis is a narrowing of the aortic valve that affects how blood flows through the heart and body. While not often linked to heart valve narrowing, high and irregular blood pressure can ...

Routine interventions such as heart catheterizations and stent placements within arteries, as well as the flotation of pacemaker and defibrillator electrodes through veins, would be unthinkable ...

THE flow of blood through the microvasculature is as vital to life as that through the heart and great vessels. Vasomotor control of the circulation is accomplished principally in the arteriolar ve ...

In this cross-sectional study of men involved in recreational strength training, those with current or previous use of anabolic androgenic steroids showed impaired myocardial flow reserve.

Increased blood flow: Yet another cause of cardiac murmurs is increased flow of blood through a normal valve.