Question

give the characteristics of respiratory surface

Answer 1

 the list of characteristic features of the respiratory surface are :
1) thin walls
2) a moist inner surface
3) a huge combined surface area
4) 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.