The heart muscle is divided into the right and left sides and each side is divided again into upper and lower chambers. There are 4 separate chambers in the heart. The atria is the heart’s upper chamber and the lower chambers are referred to as ventricles. The heart receives the venous blood (blood coming back to the heart through the veins) from the right side then pumps this blood to the lungs. The right atrium is the entry way for all the blood from the venous system, which flows to the right ventricle. By the heart contracting, the right ventricle squeezes and sends blood to the lungs through the pulmonary arteries. When blood is in the lungs it gets fresh oxygen and sends carbon dioxide into the pulmonary capillaries. Womens Fitness Kickboxing students need that freshly oxygenated blood that returns to the left atrium through the pulmonary veins. The blood then travels from the left atrium into the left ventricle. When the right ventricle contracts the left ventricle will contract as well. The left ventricle pumps the blood in its chamber through the largest artery in the body the aorta.

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This entry was posted on Friday, January 27th, 2012 at 4:28 am and is filed under . You can follow any responses to this entry through the RSS 2.0 feed. Both comments and pings are currently closed.