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.

Even when our body is at rest, our tissues require a certain rate of blood circulation. During exercise or times when greater demands are placed on the body, blood circulation must increase.

Now, before describing the circulation of blood in the human body it is necessary to know more about arteries, veins and capillaries. Arteries are thick walled blood vessels which carry blood from ...

George Washington died after his physician treated his sore throat with bloodletting, but don't let that stop you from ...

W hat do chemotherapy, dialysis, blood transfusions, stents, strokes, and SARS-CoV-2 infection have in common? All of these technologies and illnesses require circulating blood. But the seemingly ...

For nine months, you were enveloped in the warm, comfortable world of your mother's womb. Your every need was taken care of. The placenta supplied you with oxygen from your mother's blood, so your ...

In the human body, blood does not merely flow to and from one organ at a time. It circulates through various organs, transporting nutrients, drugs, signaling proteins, and metabolites from one ...

See how the human heart moves blood through the body in this animated feature from the NOVA: ... Even when our body is at rest, our tissues require a certain rate of blood circulation.