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Front 1

STYLOPHARYNGEUS

Back 1

D. Stylopharyngeus

1. Origin: medial side ofthe styloid process

2. Insertion: passes through the gap in the lateral pharyngeal wall between
the superior and middle pharyngeal constrictors and merges with the
palatopharyngeus in the lateral pharyngeal wall

3. Action: elevation ofthe pharynx

4. Innervation: glossopharyngeal nerve

Front 2

DEGLUTITION

-after the pharynx has been elevated, describe deg.

Back 2

E. Deglutition

1. After the pharynx has been elevated (and thereby shortened and wid-
ened) by contraction ot tlie palatopharyngeus, salpingopharyngeus, and
Stylopharyngeus, the tongue pushes the bolus of food posteriorly into
the oropharynx

Front 3

DEGLUTITION

-closes the nasopharynx
-successive contractions of?

-what muscle relaxes to allo bolus in the esophagus

Back 3

E. Deglutition

2. Elevation ofthe soft palate by the tensor veli palatini and levator veli
palatini closes oft'the nasopharynx from the oropharynx and successive
contractions ofthe superior and middle pharyngeal constrictors and the
thyropharyngeus pass tlie bolus inferiorly; the cricopharyngeus relaxes
to allow the bolus to pass into the esophagus

Front 4

GLOSSOPHARYNGEAL NERVE

-exits where? relative to?
-pharyngeal branches contribute to?

Back 4

A. Glossopharyngeal nerve

1. Exits the jugular foramen anterior to the internal jugular vein and de-
scends lateral to the stvlopharyngeus

2. Pharyngeal branches contribute to the pharyngeal plexus and provide
sensory innervation to the mucosa of the oropharynx; its only motor
branch supplies the Stylopharyngeus

Front 5

VAGUS NERVE

-exits?
-relative to hypoglossal?
-accessory?
-IJV?

Back 5

B. Vagus nerve

1. Exits the jugular foramen posterior to the internal jugular vein and
medial to the accessory nerve; the hypoglossal nerve exits the hypo-
glossal canal medial to the vagus nerve and passes laterally, posterior
to the vagus nerve, adhering to it