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.

Learn How the Heart Works. Your heart is an amazing organ. It continuously pumps oxygen and nutrient-rich blood throughout your body to sustain life. This fist-sized powerhouse beats (expands and ...

Discover the 8 best vitamins for improving blood circulation in your legs. Learn how these nutrients support healthy blood flow and leg health.

The cardiovascular system, also known to some as the circulatory system, consists of the heart, blood vessels, and blood. Learn more about it here.

The heart is the size of a fist and weighs 0.45kg - the equivalent of about half a bag ofsugar. In an adult of average fitness, it beats around 70 times a minute (at rest) and 100,000 times a day.

Learn about the circulatory system with these interactive learning resources for KS2 Science students aged 7-11 from ... Veins - A type of blood vessel that takes deoxygenated blood to your heart.

Find out about the blood and circulatory system and how cancer and its treatment may affect them. ... The blood flows around the body in blood vessels (tubes) called arteries, veins and capillaries.

The muscular walls of the heart, which are faint red, surround the green endothelium that lines the heart’s interior. The blood cells flowing through the heart are bright red. Biology in the ...