Question

How are the alveoli desined to maximise the exchange of gases ?

Answer 1

Explanation:

they just increase the surface area to increase the rate

Answer 2

♥ The alveoli are thin walled and richly supplied with a network of blood vessels to facilitate exchange of gases between blood and the air filled in alveoli .

♥ Alveoli have balloon-like structure . Thus , provide maximum surface for exchange of gases .