Circulatory System Animation Image
It is the circuit of vessels that supplies oxygenated blood to and returns the deoxygenated blood from the body tissues. It is the circulation of blood in the blood vessels which supply the heart muscle (also known as myocardium). The circulatory system is an organized network.
Video: Heart and circulatory system. The lungs refresh the blood with a new supply of oxygen, which comes from the air that you breathe in. The now oxygen-rich blood, shown in red, then returns from the lungs and enters the left atrium. The oxygen-rich blood then flows from the left atrium to the left ventricle.
Video: Heart and circulatory system. The lungs refresh the blood with a new supply of oxygen, which comes from the air that you breathe in. The now oxygen-rich blood, shown in red, then returns from the lungs and enters the left atrium. The oxygen-rich blood then flows from the left atrium to the left ventricle.