Identify the subdivisions of the pharynx and the muscles of the pharyngeal wall.
- (ON BOTH SIDES) Identify the nasal pharynx, oral pharynx and laryngeal pharynx. (G 8.24;N 63;Gl 38.29)
- (ON BOTH SIDES) Start at the midline (the sagittal saw cut) and blunt dissect in the retropharyngeal space. Separate the pharyngeal wall from the prevertebral fascia. (G 8.36;N 63)
- (ON BOTH SIDES) Identify and attempt to clean the superior, middle and inferior constrictors. (G 8.23B;N 67;Gl 38.30) Use the greater horn of the hyoid bone to assist you in identifying the level of the middle constrictor. The superior constrictor is continuous with the buccinator muscles.
- (ON BOTH SIDES) Using the midline approach, isolate and identify the stylopharyngeus muscle. Blunt dissect the posterior-lateral aspect of the external pharyngeal wall approximately 2 cm superior to the greater horn of the hyoid bone. (G 8.23B;N 67 and 71;Gl 38.31) Identify the glossopharyngeal nerve adjacent to the stylopharyngeus muscle. Attempt to identify the pharyngeal branches of the vagus nerve.
