Explain the role of alveoli in the lungs with respect to its structure and function.
Answers
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Alveoli:-
The functional unit of lungs is tiny air sacs that arise from bronchioles called alveoli. These terminal air sacs is the area where exchange of gases takes place within the lungs. This air exchange consists of absorption of oxygen and removal of carbon dioxide. In the following paragraphs, you shall learn more about the function and structure of this air sac.
Structure of Alveoli
Before moving on to the function of alveoli, let us understand their structure. This is because the function and structure of this unit go hand in hand. So, let us highlight a few facts about the respiratory system. There are about 300 to 400 million alveoli in an adult lung. The average diameter of an alveolus is about 200 to 300 microns.
It's function
The basic function of alveoli is exchange of gases. Its structure is the site where the gaseous exchange during respiration takes place. These structures are surrounded by capillaries carrying blood. The exchange of carbon dioxide in the blood from these capillaries occurs through the walls of alveolus.
Answer:
Explanation:
Alveoli are an important part of the respiratory system whose function it is to exchange oxygen and carbon dioxide molecules to and from the bloodstream. These tiny, balloon-shaped air sacs sit at the very end of the respiratory tree and are arranged in clusters throughout the lungs.