Question

The presence of air in soft tissues produces a characteristic crackling sensation called:
A) spontaneous pneumothorax.
B) subcutaneous emphysema.
C) subcutaneous hypoxia.
D) pulmonary embolus.

Answer 1

Answer: B. Subcutaneous emphysema

Explanation:

Subcutaneous means tissue layer beneath the skin. Emphysema means trapping of air.

Subcutaneous emphasema is a condition in which the air enters inside the skin. It usually occurs in the regions of chest cavity, face, and neck. It gives a crackling feel when touched.