Multiple Choice
Which of these does not act as a protective mechanism in the respiratory system?
A) ciliated epithelium lining the respiratory tract
B) mucous lining the respiratory tract
C) alveolar macrophages in the lungs.
D) acidic secretions from the lining of the trachea
Correct Answer:

Verified
Correct Answer:
Verified
Q38: <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB7561/.jpg" alt=" Use the diagram
Q39: Which portion of the nasal cavity is
Q40: The scalene muscles are involved in deep
Q41: Describe the anatomical changes to the larynx
Q42: The detergent-like molecule that keeps the alveoli
Q44: <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB7561/.jpg" alt=" Use the diagram
Q45: The ability to vary the pitch of
Q46: Which of the following changes does not
Q47: Which part of the nose is composed
Q48: In the wall of the trachea and