The circulatory system consists of one heart, five liters of blood, and approximately 96,000 kilometers of blood vessels, responsible for transporting nutrients and waste throughout the body.

Each 2.54 square centimetre (a square inch) of human skin has six metres (20ft ... pins and needles is caused by an impairment of blood circulation.

When the significance of the human circulatory system was finally established, it revolutionized the life sciences and ushered in modern medicine. The Greeks observed the ebb and flow of tides in the ...

A live water birth is shown and real life images combined with CGI to illustrate the anatomy and function of the circulatory system. This short film is from the BBC series, Inside the Human Body.

Scientists have found that the aorta acts like a 'second heart,' using stretch-and-recoil power to pump blood—revealing a ...

Veins between two capillary networks are portal systems. Closed circulatory system, but fluid constituents of blood leak out of capillaries and return to the heart by the second component of the ...

This short film offers a look at respiration and a tour around the circulatory system and digestive system in the human body, through blood vessels and into mitochondria. There is a detailed ...

Cold toes, color changes, and swelling could be early signs of poor circulation. Here's how your toes signal cardiovascular ...

Poor circulation affects more than just your hands and feet. Learn how it might be impacting your brain, skin, and more.

The FDA has cleared the first clinical trial to test genetically engineered pig livers in patients who have acute-on-chronic liver failure. The trial will evaluate the use of a Egenesis porcine liver ...

A new University of Miami study looked at forty years worth of data from across the Atlantic and found cooler waters in deep ...