The actual exchange of gases takes place in t | vedclass

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(B) Step $1$: The respiratory system consists of airways that lead to the lungs.Step $2$: Within the lungs, the bronchi branch into smaller bronchiole

Vedclass · Accepted Answer

Alveoli

Vedclass · Answer

(B) Step $1$: The respiratory system consists of airways that lead to the lungs.Step $2$: Within the lungs, the bronchi branch into smaller bronchioles.Step $3$: The bronchioles terminate in tiny, balloon-like air sacs called $Alveoli$.Step $4$: The walls of the $Alveoli$ are one cell thick and surrounded by blood capillaries, which allows for the efficient diffusion of $O_2$ and $CO_2$.Step $5$: Therefore, the actual exchange of gases occurs in the $Alveoli$.

The actual exchange of gases takes place in the . . . . . . of the lungs.

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