Question

What is the purpose of surfactant?
Responses

To provide sound for the voice
To provide sound for the voice

To keep the alveoli from collapsing
To keep the alveoli from collapsing

To promote good gas exchange
To promote good gas exchange

To keep the bronchi from collapsing

Answer 1

The correct response is: **To keep the alveoli from collapsing.**

Surfactant is a substance composed of lipids and proteins that reduces surface tension in the alveoli (the small air sacs in the lungs), preventing them from collapsing and aiding in the process of breathing and gas exchange.