Question

What are alveoli? How does the inhaled air reach the alveoli?​

Answer 1

Answer:

When you breathe in (inhale), air containing oxygen enters your windpipe, passes through the bronchi and eventually reaches the air sacs. These air sacs, called alveoli, are responsible for gas exchange. ... The oxygen in inhaled air passes across the thin lining of the air sacs and into the blood vessels.

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Answer 2

Answer:

Explanation:When you breathe in (inhale), air containing oxygen enters your windpipe, passes through the bronchi and eventually reaches the air sacs. These air sacs, called alveoli, are responsible for gas exchange. ... The oxygen in inhaled air passes across the thin lining of the air sacs and into the blood vessels