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Laboratory 31. Pharynx
Step 8. Vessels and Nerves of Parapharyngeal Region

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Note the relative positions of these nerves, and their relationships to the large vessels of the neck, the internal jugular vein and the common carotid artery.

Trace the course of the glossopharyngeal nerve, [right], [left] as it passes posteriorly to the stylopharyngeus muscle. Identify also the superior laryngeal nerve [held by tweezers], a branch of the vagus nerve, gives two branches: the internal laryngeal nerve and external laryngeal nerve. The vagus also gives off pharyngeal nerves which innervate the pharyngeal constrictor muscles.

Links and References:
Grant's: 8.57, 8.58
Rohen/Yokochi: 160