When a person takes part in exercise their face can become pink due to vasodilation of the blood vessels close to the skin's surface. When the heart contracts it pushes blood into blood vessels which ...

The cardiovascular system consists of the heart, blood vessels, and blood. Its primary function is to transport nutrients and oxygen-rich blood to all parts of the body and to carry deoxygenated blood ...

Space to play or pause, M to mute, left and right arrows to seek, up and down arrows for volume. There's perhaps no element of the body that captures our imagination more than the heart. We link it ...

transport and deliver oxygen, nutrients and hormones to the body remove waste products such as carbon dioxide and lactic acid protection against disease and infection maintain body temperature When a ...