External Respiration (Alveoli) – What makes it so efficient
{"Image DocumentName": "External Respiration (Alveoli) \u2013 What makes it so efficient?", "Image ImageDescription": "Alveoli walls very thin \u2013 diffusion distance is very short. Huge amount of alveoli with massive surface area for diffusion. Vast supply of capillaries \u2013 huge surface area for diffusion. Diameter of capillaries is slightly narrower than area of red blood cells. Causes red blood cells to distort to increase surface area for gas exchange. Forces red blood cells to go through capillaries in single file to maximise exposure to oxygen.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}