A Clinical Sample Labeled as "Sputum" was Collected From

Question

A clinical sample labeled as "sputum" was collected from
A) the skin.
B) the blood.
C) the central nervous system.
D) a piece of tissue.
E) the lungs.

Accepted Answer

Sputum is a mixture of saliva and mucus that is coughed up from the respiratory tract. Therefore, the most probable origin of the clinical sample labeled as "sputum" is the lungs.