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The heart

By Jinke and Emily

Jinke Oostvogel

on 14 February 2013

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Transcript of The heart

Blood By Jinke and Emily ZT2A Left atrium Left ventricle Right ventricle Left atrium Aorta Vena cava Pulmonary artery Pulmonary vein When you breathe the air goes to your lungs.
It goes through the bronchioles to the alveoli. there the Oxygen passes through and goes into the blood. The blood becomes oxygenated. The red blood cells transport the Oxygen in the blood through the whole body. The red blood cells have a special shape where the Oxygen lays on. It sticks in the hollow middle. When the blood is oxygenated it goes through the left atrium and to the left ventricle. The muscles of the heart pull together so the heart pumps. It pumps the oxygenated blood through the Aorta to the whole body. The blood becomes less oxygenated at every part in the body. It's never 100% deoxygenated though, especially in organs the blood loses a lot of oxygen. When the blood has gone through the whole body it enters the heart again via the right atrium. The blood is now in the right ventricle. The muscles pull together and the blood is pumped towards the alveoli to swap the carbon dioxide for Oxygen and go on the journey in the body again. The average adult heart beats 72 times a minute, 100000 times a day, 3600000 times a year and 2.5 billion times during their lifetime.
Every day, the heart creates enough energy to drive a truck 20 miles. in a lifetime that is equivalent to driving to the moon and back!
The 'thump thump sound' a heart makes in a heart beat is the sound made by the four valves of a heart closing.
The early Egyptians believed that the heart and other major organs had wills of their own and moved around in the body. air air So blood consists of red blood cells which transport Oxygen and Carbon dioxide. It also contains other things like platelets. Platelets are important for closing open wounds. There are also white bloods cells. These cells fight diseases. There are two types of white blood cells. Antibodies which recognise the disease. They make you immune for it. They store the data and destroy the disease. You also have Phagocytes which swallow germs. Finally there is blood plasm which transports waste, oxygen and nutrients. TADAAAA
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