MICROANATOMY

Detailed explanation-1: -Gas Exchange Between Alveolar Spaces and Capillaries Three processes are essential for the transfer of oxygen from the outside air to the blood flowing through the lungs: ventilation, diffusion, and perfusion.

Detailed explanation-2: -It must be permeable to the gases. It should be thin( 1mm or less) to allow diffusion effectively. The respiratory surface must have a large surface area for maximum oxygen uptake in minimum time. It must be richly supplied with blood vessels for maximum oxygen uptake.

Detailed explanation-3: -Large surface area to allow faster diffusion of gases across the surface. Thin walls to ensure diffusion distances remain short. Good ventilation with air so that diffusion gradients can be maintained. More items

Detailed explanation-4: -Membrane thickness – the thinner the membrane, the faster the rate of diffusion. Membrane surface area – the larger the surface area, the faster the rate of diffusion. Pressure difference across the membrane. Diffusion coefficient of the gas.