Question
Which type of cell is specialized to facilitate gas exchange?
A. Type I pneumocytes
B. Type II pneumocytes
C. Internal intercostal muscle fibres
D. External intercostal muscle fibres
▶️Answer/Explanation
Ans:A
Question
Which process results in the exchange of gases across the membrane of pneumocytes?
A. Active transport
B. Simple diffusion
C. Facilitated diffusion
D. Mass flow
▶️Answer/Explanation
Ans:B
Question
The diagram shows a section through an alveolus.
What are the functions of the following labelled structures?
Answer/Explanation
Ans:C