Q1. [1] straightforward initial-understanding
Which of the following best describes the alveoli?
(a) Tube-like structures that carry air to the lungs
(b) Balloon-like structures where gas exchange takes place
(c) Muscular structures that pump air into the lungs
(d) Filter structures that remove dust from the air
- a Tube-like structures that carry air to the lungs
- b Balloon-like structures where gas exchange takes place
- c Muscular structures that pump air into the lungs
- d Filter structures that remove dust from the air