Monday, October 20, 2014

The circulatory system

The circulatory system

In this part of the unit we are focusing on the heart. We've been looking at pictures of the veins in the head, arm without the skin and muscle tissue.
The aorta is the largest artery that moves oxygen rich blood in your heart. The pulmonary artery moves oxygen poor blood from the hearts right ventricle to the lungs. The pulmonary vein moves the oxygen rich blood from the lungs to the hearts left atrium. The heart also moves the blood but it needs its own blood to function as well. The conary arteries provide the heart with oxygen rich blood.
The vena cava superior moves oxygen poor blood into the right atrium from the head neck and arms.
The vena cava inferior moves oxygen poor blood into the right artium  from legs and lower body.
The left atruim is the chamber that collects oxygen rich blood, it gets blood from the pulmonary vein and sends it to the left venticle. The left ventricle is the chamber that collects oxygen rich blood and sends it to the aorta.


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