Question

Define respiratory surface and give its essential feature

Answer 1

Definition- respiratory surface, also known as the respiratory membrane, includes the alveolar epithelial cells as well as the pulmonary capillary endothelial cells. Gas exchange occurs across this membrane and is diffusion of oxygen into and carbon dioxide out of the blood.
Features:-
1.All the respiratory organs have large surface area to get enough oxygen.
2.All the respiratory organs have thin walls for easy diffusion and exchange of respiratory gases.
3.All the respiratory organs such as skin, gills and lungs, have a rich blood supply for transporting respiratory gases.

Answer 2

Answer:

This respiratory surface, also known as the respiratory membrane, includes the alveolar epithelial cells as well as the pulmonary capillary endothelial cells. Gas exchange occurs across this membrane and is diffusion of oxygen into and carbon dioxide out of the blood.

Hope it helps