Well, the blood has to be kept moving around all the time because it's the body's delivery system. Every possible part of the body has to be supplied with oxygen and food and water, and the veins and ...

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 ...

Ageing known to be major risk factor for poor health. Many of us have gazed at a baby and marvelled at the perfection of new life – but 40 years on, that baby will be showing signs that age catches up ...

carries food (nutrients) and oxygen to all the cells of the body carries away waste products that the body needs to get rid of Without a blood supply, cells and body tissues die. The blood flows ...

Quirks and Quarks19:53Our planet’s circulatory system depends on animals eating, excreting and expiring From the tiniest insects to the largest whales, biologist Joe Roman says animals play an ...

Your body's circulatory system is a wondrous thing. It's made up of blood vessels that carry blood to and from your heart and also pumps blood to your lungs so you can breathe. It helps grow and ...