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The Path of Oxygen and Carbon Dioxide

The Respitory system and circulatory system
by

Jack Jelinek

on 12 October 2012

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Transcript of The Path of Oxygen and Carbon Dioxide

The Path of Oxygen and Carbon Dioxide In order for your cells to stay alive they need a gas called oxygen.
Oxygen gets into your body through a process called respiration. The Path of Oxygen When you inhale, your Diaphragm contracts (moves down) and causes a drop in air pressure. Higher pressured air rushes in from outside, bringing in oxygen. The Path of Oxygen The oxygen comes into the body through the Nose or Mouth. The nose is a better way to inhale because there are tiny little hairs that filter out unwanted substances and the air is warmed versus just going in through the mouth. The Path of Oxygen After the oxygen enters the body through the nose or mouth, it goes down the Windpipe (Trachea). The Path of Oxygen Trachea Once the air gets to the end of the windpipe, it enters the Lungs. The lungs expand more as more air goes into them. The Path of Oxygen The lungs have tubes in them and at the end of them are tiny Air Sacs, about 3oo million air sacs. The oxygen passes through the air sacs and enters the blood stream (the circulatory system). The Path of Oxygen The oxygen jumps on to a Red Blood Cell and travels to the capillaries. The Path of Oxygen In the Capillaries, the cells of the body take the oxygen and dump off carbon dioxide. The Path of Oxygen Then the carbon dioxide travels through the veins and into
the Heart, the 4 chambered engine of our body. The Path of Carbon Dioxide Next the carbon dioxide rides from the heart through an Artery. The Path of Carbon Dioxide The artery lets off the carbon dioxide at the Air Sacs in the lungs. The Path of Carbon Dioxide Once the carbon dioxide passes through the air sacs it travels
up through the tubes in the Lungs because the Diaphragm is now relaxing (going up). The Path of Carbon Dioxide Finally the carbon dioxide goes up through the Windpipe
(Trachea) and leaves the body through the Nose or Mouth. The Path of Carbon Dioxide Trachea
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