Question

1how large surface area of resporatory surface useful for an organism 2 describe the mechanism of brweathing in uuman 3 how alveoli are desined to maximise the surfave area of respiratory organ

Answer 1

1) a large surface area  of respiratory surface helps in increase of gaseous intake

3) alveoli are made of single layered epithelial cells which increase rate if diffusion and increase surface area for gaseous exchange

2) nose - trachea - bronchioles - alveoli

lungs , diaphragm and intercostal muscles expand to increase volume inside and to create a gradient so that air gushes inside .