Question

why are lungs divided into very small sac like structures called alveoli

Answer 1

HEYA GE

# LUNGS

# Alveoli

- Bcoz to increase Respiratory surface Area LUNGS ARW DIVIDED INTO ALVEOLI ....

THANK YOU

Answer 2

hey mate : )

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Lungs are divided into sacs to increase the surface area and to easily transport oxygen to the blood vessels which surrounds the air sacs and also air sacs have a thin film of oxygen which helps to absorb oxygen quickly.

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hope it helps ^_^