♡♡what is an alveolus♧
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An alveolus (plural: alveoli) is a word used in anatomy for hollow cavities, which are empty areas within a body. Although there are many different types of alveoli in the body, the word alveoli is usually used to talk about small air sacs in the lungs of mammals. These are also called pulmonary alveoli.
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An alveolus is an air sac in the lungs
Explanation:
Our windpipe divides into two bronchi which divide into many bronchioles which divide into many alveoli(singular alveolus)
There are blood vessels that are connected to the alveolus and the oxygen is diffused into the blood and carbon dioxide diffuses out and is exhaled.
Our lungs contain 300 million alveolus
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