Functional unit of lungs is A) alveoli B) air sacs C) bronchioles
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alveoli: Alveoli are tiny sacs within our lungs that allow oxygen and carbon dioxide to move between the lungs and bloodstream.
air sacs: Air sacs are found as tiny sacs off the larger breathing tubes (tracheae) of insects, as extensions of the lungs in birds, and as end organs in the lungs of certain other vertebrates. They serve to increase respiratory efficiency by providing a large surface area for gas exchange.
bronchioles: The function of the bronchioles is to ensure that incoming air is supplied to each alveolus. The alveoli are surrounded by tiny blood vessels called capillaries. It is through the thin capillary walls that oxygen enters the blood, and carbon dioxide and water leave the blood.(hope it helps you!)
air sacs: Air sacs are found as tiny sacs off the larger breathing tubes (tracheae) of insects, as extensions of the lungs in birds, and as end organs in the lungs of certain other vertebrates. They serve to increase respiratory efficiency by providing a large surface area for gas exchange.
bronchioles: The function of the bronchioles is to ensure that incoming air is supplied to each alveolus. The alveoli are surrounded by tiny blood vessels called capillaries. It is through the thin capillary walls that oxygen enters the blood, and carbon dioxide and water leave the blood.(hope it helps you!)
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