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Path of an Oxygen Molecule

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Savannah Lawing

on 15 May 2015

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Transcript of Path of an Oxygen Molecule

Path of an Oxygen Molecule
Through the Body

The path of an oxygen cell
begins with inhalation. You breath oxygen in through your nose. The nasal cavity warms and wets the air because the cold, dry air can irritate your lungs.
In order for your body to produce energy you have to have oxygen. The process of respiration is what allows oxygen to reach cells and then carbon dioxide to be released at the end of the process.
[Side note]
What causes you to inhale?
When your diaphragm is pulled down and the lungs expand ,high pressure air from outside your body rushes in.
You can also inhale through your mouth. However, it is better to inhale through your nose because your nose has tiny little hairs that filter out dirt and germs. This is why people who breathe through their mouth are more susceptible to getting sick.
After passing through the nose and the mouth, the inhaled oxygen enters the larynx. The larynx is a passageway that air passes through before it gets to the trachea. It stops food and other things from making its way to the lower respiratory system. The larynx is also known as the voice box, this is where vocal sounds are produced.
The windpipe is lined with C-shaped cartilage. The back part of each ring is made up of muscle. The cartilage allows the trachea to keep it's shape and the muscle lets it expand and contract when we breathe.
The trachea, also known as the windpipe, connects the larynx to the lungs.
Bronchi are the main passageway into the lungs. There are two bronchus, one leading into each lung
After the air leaves the trachea it enters the lungs. It starts in the bronchi, goes into the bronchioles, and then into the alveoli.
As the air gets farther into the lungs it reaches the bronchioles.
Next is the alveoli, this is where oxygen exchange takes place.
Path of Deoxygenated Blood Through the Heart
How does blood get from your lungs to your heart?
Small capillaries that wrap around the alveoli receive oxygen from the lungs. The red blood cells carry that oxygen from the capillaries to heart.
1. Superior/Inferior Vena Cava
2. Right Atrium
3. Tricuspid Valve
4. Right Ventricle
5. Pulmonary Semi-Lunar Valve
6. Pulmonary Trunk
7. Pulmonary Artery
8. Back to the Lungs
Path of Oxygenated Blood Through the Heart
1. Pulmonary Veins
2. Left Atrium
3. Bicuspid Valve
4. Left Ventricle
5. Aortic Semi-Lunar Valve
6. Aorta
7. To the Body
After the oxygen is used up and turned into carbon dioxide we breathe out. We exhale the exact amount of carbon dioxide as we inhaled oxygen. When this happens the carbon dioxide follows the same path out that the oxygen did in, just in the opposite order.
When you exhale the diaphragm causes your lungs to push the air out of your body
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