How are alveoli designed for the maximum diffusion of respiratory gases?
Answers
Answer:
There are millions of alveoli present in our lungs. alveoli are the balloon like structure present at the end of each bronchioles.The alveoli provides a large surface area where exchange of gases takes place. The wall of alveoli have an extensive network of blood vessels.These blood vessels are semi-permiable membrane allows the exchange of gases like carbon dioxide and oxygen.
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♥ The alveoli are thin walled and richly supplied with a network of blood vessels to facilitate exchange of gases between blood and the air filled in alveoli .
♥ Alveoli have balloon-like structure . Thus , provide maximum surface for exchange of gases .