Each 2.54 square centimetre (a square inch) of human skin has six metres (20ft) of blood vessels. Veins hold about 65 per cent of the body's blood and have one-way valves tohelp blood move.

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.

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

There are three types of blood vessel: arteries, veins and capillaries. The heart is a muscular organ that pumps blood around your circulatory system. The circulatory system is the heart and all ...

Locate the rest of the vessels listed in Table 1 and shown in Figure 5.3. Functional anatomy of circulatory and respiratory system is important. Think carefully about relation between circulation and ...