Multiple choice

Which among the following statements regarding the trachea in human beings is incorrect?

  1. There are almost fifteen to twenty incomplete C-shaped tracheal rings of cartilage.

  2. The trachea is lined with pseudostratified columnar epithelium.

  3. The cricoid cartilage is the only complete ring of cartilage in the trachea.

  4. A flap-like epiglottis closes the opening to the larynx during swallowing.

  5. The esophagus lies anteriorly to the trachea.
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

The esophagus lies posteriorly to the trachea. Circular bands of fibrous connective tissue called the annular ligaments of trachea join the tracheal rings together.

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