Question

1) List three characteristics of lungs which make them an efficient respiratory surface

Answer 1

1 )large surface area
2) one cell thickness
3) moist
4) surrounded with blood capillaries

Answer 2

The characterstics of lungs which make them an efficient respiratory surface are:
1. thin walls.
2. a moist inner surface.
3. a huge combined surface area.
4. a rich blood supply.


In summary gas exchange is the movement of oxygen into the blood and carbondioxide out of the blood across the respiratory membrane in the lungs...Gas exchange is efficient due to thin respiratory membrane, the high speed of diffusion,high surface area and lipid solubility of carbondioxide and oxigen.