Question

unit examinations content
page 22 of 51

question 21

the area in the chest between the lungs is called the:
a pleural cavity.
b diaphragm.
c alveolus.
d sinus cavity.
e mediastinum.

Explanation:

To solve this, we analyze each option:

• Option A: Pleural cavity is around each lung, not between them.
• Option B: Diaphragm is a muscle below the lungs, not between them.
• Option C: Alveolus is a tiny air sac in the lung, not a region between lungs.
• Option D: Sinus cavity is in the skull (e.g., nasal sinuses), not in the chest between lungs.
• Option E: Mediastinum is the area in the chest between the two lungs, containing structures like the heart, trachea, etc.

Answer:

E. mediastinum