16
AssignmentMultiple Choice

Anatomy of the Lower Respiratory System

Question 16 • Anatomy & Physiology B

What is the function of the pleural cavity?

Answer
A
to move oxygen into the blood
B
to carry air deep into the lungs
C
to protect the lungs and attach them to the ribcage
D
to serve as a passageway for air between the upper and lower respiratory systems

Explanation

The pleural cavity is the thin fluid-filled space between the membranes surrounding the lungs and lining the chest wall. It helps the lungs move smoothly during breathing and keeps them coupled to the chest wall, which helps protect and anchor them near the ribcage. The choice about carrying air describes the airways, not the pleural cavity.

AI-written and checked against the verified answer.

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