explain the role of alveoli with respect to its structure and function (3 marks)
Answers
Answer:
Alveoli are tiny balloon shaped structures and are the smallest passageway in the respiratory system. The alveoli are only one cell thick, allowing the relatively easy passage of oxygen and carbon dioxide (CO2) between the alveoli and blood vessels called capillaries.
Alveoli are tiny balloon shaped structures and are the smallest passageway in the respiratory system. The alveoli are only one cell thick, allowing the relatively easy passage of oxygen and carbon dioxide (CO2) between the alveoli and blood vessels called capillaries.One cubic millimeter of lung tissue contains around 170 alveoli. While the total number can vary from one person to the next, there are literally millions within the human lungs spanning a surface area of roughly 70 square meters.
Answer:
Alveoli are an important part of the respiratory system whose function is to exchange oxygen and carbon dioxide molecular to and from the bloodstream. These tiny, balloon-shaped air sacs sit at the end of the respiratory tree and are arranged in clusters throughout the lungs.
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