Tusomesasa.

Explain the adaptations of the mammalian alveolus to gaseous exchange.(7marks)

Suggested resposponses

Has numerous alveoli to increase surface area for gaseous exchange; highly vascularized for faster transportation of respiratory gases; contained in the thoracic cavity that is spacious for excellent ventilation; the alveoli have thin epithelium for faster diffusion of gases; alveoli are moist for dissolution of respiratory gases; has macrophages that...