A nurse is conducting a session on the respiratory system for a group of nursing students. The nurse is reviewing the anatomic relationships between the larynx, trachea, and esophagus. What structures are located in the pharynx?
1 . Alveolar sac
2 . Trachea
3 . Esophagus
4 . Pleura
A) 1, 2
B) 1, 4
C) 2, 3
D) 3, 4
C
Feedback:
The trachea and esophagus are both located in the pharynx. The alveolar sac is not located in the pharynx. The pleura have two layers. One layer covers the lungs, and the other layer lines the chest wall. Serous fluid secreted by the pleura enables the lungs to move without pain or friction.
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