Air enters through your nose or mouth to your air sacs.
Air enters the body through the nose or mouth and travels down the trachea. From there, it enters the bronchial tubes in the lungs, which branch into smaller airways called bronchioles. Finally, oxygen is exchanged with carbon dioxide in the alveoli, tiny air sacs in the lungs where oxygen is absorbed into the bloodstream.
Organisms obtain energy from their food through oxidative metabolism. Sugars are broken down to water and carbon dioxide and that requires oxygen. Humans extract oxygen from the air via their lungs so that the exhaled air has less oxygen (and also more carbon dioxide) than ambient air.
One can effectively remove CO2 from the body by breathing out. When we exhale, we release carbon dioxide from our lungs into the air. This process helps maintain the balance of gases in our body and keeps us healthy.
Most breathing in healthy humans occurs through the nose. As air enters the nasal cavity, it is filtered of large debris by hairs lining the inside of the nose, and then further filtered through the nasal conchae, an area of folded, moist tissues; this also warms the air to near body temperature when it is cold.
The effect of air condition on human health is that ,the from the machine is high and cause illness for human heath.Frequent sitting under air condition can cause you getting cold and other sickness.When you get use of the air condition for years over and it get to a time when you do not have the money to repair your old one neither to buy new one that is were you suffer a lot because you are use to it and if care is not taken it may send you to an early grave.
The mouth and the nose is where air comes in.
Two air passages which allow air to enter the body are the cilia and aveoli !!!
Mouth and nose
Air can enter the body by the mouth or the nose. Air then goes down the windpipe to the lungs where it can enter the bloodstream.
the air enters the bronchioles, and into the aveoli, which are small, one cell-thick sacks of air. These sacks are surrounded by tiny capillaries, which is how your blood retrieves its oxygen. From here, the oxygenated blood is carried back to the heart through the pulmonary vein and pumped into your body.
one train enters the tunnel at 7am the other at 7pm
Light will bend towards the normal as it enters water from air, due to the change in speed of light when it moves from one medium to another with a different optical density.
Air enters the body through the nose or mouth and travels down the trachea. From there, it enters the bronchial tubes in the lungs, which branch into smaller airways called bronchioles. Finally, oxygen is exchanged with carbon dioxide in the alveoli, tiny air sacs in the lungs where oxygen is absorbed into the bloodstream.
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They all enter the lung ... but the only one that quickly enters the blood is oxygen. Because oxygen is the one gas that has a higher partial pressure in "lung air" than its partial pressure in the "lung blood". Note that the blood's CO2 pressure is higher than the air in the lungs, so CO2 comes out of the blood into the lung's air.
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