Question

1) List three characteristics of lungs which make them an efficient respiratory surface and also give reasons why each influence diffusion??

Answer 1

1. large surface area for gaseous exchange increases rate of diffusion.
2. moist surface for better diffusion of gases.
3. it contains a vast network of blood vessels which makes respiratory transport of gases through the blood via the alveoli much rapid

Answer 2

1. There are alveoli in lungs which increase the surface area and speeds up the  gaseous exchange.
2. The alveoli are supplied with large network of blood vessels to ease up the diffusion process.
3. It is moist and moist condition helps in faster diffusion.