Question

how are the alveoli designed to maximise the exchange of gases

Answer 1

Alveoli have balloon like structure which maximizes the surface area for gaseous exchange and also they are richly supplied by blood vessels for the better diffusion process.

Answer 2

♤ In the lungs, the air passage that divides into smaller and smaller tubes called bronchi which form bronchioles .

♤ The bronchioles terminate in the balloon like structure called alveoli.

♤ The alveoli present in the lungs provide maximum surface for exchange of gases.

♤ The alveoli have very thin walls and contain an extensive network of blood vessels to facilitate exchange of gases.