The Circulatory System is the system of organs in the human beings and other animals which is responsible for transport of materials inside the body. It consists of heart, arteries, veins, capillaries ...

As cardiovascular research continues to evolve, new ways of understanding circulation are expanding how clinicians think ...

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 ...

Water and nutrients are important to keep living things alive and healthy. Animals, including humans, get these from what they eat and drink, but how do the water and nutrients get transported around ...

The metabolic activity of any tissue is limited by its blood supply; the more active any organ, the more blood it needs and the more extensive its vascularization. The changes in metabolic activity ...

When you start feeling under the weather, you might reach to the sides of your neck (just like your parents used to) to see if you have inflamed lymph nodes. Even if you know nothing else about the ...

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 ...

There are about 30-40 billion white blood cells present in our body to fight against infective and foreign organisms. On average, human blood circulates through the whole body every 23 seconds.