MCAT Biology Question 81: Answer and Explanation

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Test Information

Question: 81

6. Each of the following statements regarding the anatomy of the respiratory system is true EXCEPT:

  • A. the epiglottis covers the glottis during swallowing to ensure that food does not enter the trachea.
  • B. the trachea and bronchi are lined by ciliated epithelial cells.
  • C. the pharynx contains two vocal cords, which are controlled by skeletal muscle and cartilage.
  • D. the nares are lined with vibrissae, which help filter out particulate matter from inhaled air.

Correct Answer: C

Explanation:

The pharynx, which lies behind the nasal cavity and oral cavity, is a common pathway for food entering the digestive system and air entering the respiratory system. It is the larynx that contains the vocal cords, not the pharynx.

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