6 makrer on lungs

Question 1

how is the lung adapted for efficient exchange of gases

Answer 1

-many aveoli that produce a large surface area:volume

-cappillaroes are thin which provides short diffusion path for o2 and co2

-breathing moves air in and out to bring in fresh oxygen and remove carbon dioxide

-good blood supply around avelio to remove oxygenated blood quickly and maintain a concentration gradient