Structure of the cardiovascular system - Cardiovascular system - OCR - GCSE Physical Education Revision - OCR - BBC Bitesize

Structure of the cardiovascular systemIf you clench your hand into a fist, this is approximately the same size as your heart. It is located in the middle of the chest and slightly towards the left. The heart is a large muscular pump and is divided into two halves - the right-hand side and the left-...

The atria (plural of atrium) are where the blood collects when it enters the heart. The ventricles pump the blood out of the heart to the lungs or around the body. The septum separates the right-hand and left-hand side of the heart...

Arteries carry oxygenated blood away from the heart (except for the pulmonary artery which carries deoxygenated blood away from the right ventricle to the lungs). The main artery is the aorta. The main vein is the vena cava...

The pathway of blood through the heartLeft-hand sideOxygenated blood is carried to the heart from the lungs in the pulmonary vein. It goes into the left atrium, through the bicuspid valve and into the left ventricle. The ventricle pumps the blood through the semilunar valve, into the aorta and rou...

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