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Journey of the Oxygen Atom

The Respiratory System
by

Urja Gaurav

on 31 October 2013

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Transcript of Journey of the Oxygen Atom

THE JOURNEY OF AN OXYGEN ATOM THROUGH THE RESPIRATORY SYSTEM
The oxygen atom starts it's journey when it is first inhaled from the environment by your nose or mouth. When you breathe in, your diaphragm contracts and your lungs expand taking in the air. Air consists of arount 78% nitrogen, 21% oxygen and 1% of other gases.
Step 1
The air which is inhaled, travels down through the trachea otherwise known as the wind pipe. The trachea then divides into 2 which is called the bronchus. This leads into the lungs.
Step 2
The lungs is where the oxygen travels after it goes through the trachea and the bronchus.
Step 3
The bronchus divides into many smaller tubes called the bronchioles which eventually terminates into small air sacs called the alveoli. Through the thin walls of the capillaries and passes into the hemoglobin, which is what holds it in the red blood cell.
Step 4
Meanwhile, the body is working on the CO2 which moves from the capillaries into the air sacs. It then travels from the right side of the heart through the pulmonary arteries
Step 5
Oxygen-rich blood from the lungs is carried through a network of capillaries to the pulmonary vein. This vein delivers the oxygen-rich blood to the left side of the heart. The left side of the heart pumps the blood to the rest of the body. There, the oxygen in the blood moves from blood vessels into surrounding tissues.
Step 6
When you breathe out, your diaphragm relaxes and moves upwards. This fills up the space between your lungs and your diaphragm and carbon dioxide is forced out
Step 7
We all breathe oxygen and give out carbon dioxide. It's a fact
Full transcript