The human heart is one of the hardest-working organs in the body. On average, it beats around 75 times a minute. As the heart beats, it provides pressure so blood can flow to deliver oxygen and ...

As the central part of the circulatory system, the heart is responsible for pumping blood, supplying oxygen and nutrients, and removing metabolic waste such as carbon dioxide from all the tissues in ...

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 ...

A circulatory system (sometimes cardiovascular system) is an organ system that moves substances to and from cells; it can also help stabilize body temperature and pH (part of homeostasis). There are ...

A new study shows that drinking coffee isn't as bad for our arteries as some previous studies would suggest. The research has shown that drinking coffee, including in people who drink up to 25 cups a ...

Here on Earth, a person's blood tends to pool in the legs because of gravity (the leg veins have valves that help to maintain blood flow from the legs back up to the heart). Things are different in ...

Share on Facebook. Opens in a new tab or window Share on Bluesky. Opens in a new tab or window Share on X. Opens in a new tab or window Share on LinkedIn. Opens in a new tab or window Transplants from ...

Heart transplantation using organs obtained from donors with circulatory death (DCD) is associated with transient right-heart dysfunction but offers short-term clinical outcomes otherwise comparable ...