Question

which term means \thick mucus secreted by tissues lining respiratory passages\?
sputum effusion
empyema phlegm

Explanation:

• Sputum is the thick mucus secreted by tissues lining respiratory passages.
• Effusion refers to the escape of fluid from blood vessels into surrounding tissues.
• Empyema is the presence of pus in a body cavity, especially the pleural cavity.
• Phlegm is a general term for mucus, but sputum specifically refers to the mucus from the respiratory passages.

Answer:

sputum