Question

14.1 PROPERTIES OF
RESPIRATORY SURFACES​

Answer 1

Answer:

thin walls.

a moist inner surface.

a huge combined surface area.

a rich blood supply- each alveolus is sounded by capillaries.

Answer 2

Answer:

The characteristic features of the respiratory surface are :

thin walls.

a moist inner surface.

a huge combined surface area.

a rich blood supply- each alveolus is sounded by capillaries.

Explanation:

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