what are alvoeli? write their function.
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alveoli is a ball like structure in lungs where the actual exchange of oxygen and carbon dioxide occurs
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Alveoli are round balloon shaped like structures which terminates in the end of bronchi of our lungs that helps in the exchange of gases.
Functions of Alveoli:
1. It increase the surface area to exchange gases.
2. It has large extension of blood vessels that helps in transport of oxygen to the tissues.
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