IV.E.2 Neck: Oropharynx Page 1 of 6

Objectives:

6.2.1 Describe the boundaries of the oral cavity and oropharynx.

6.2.2 Identify the components of the oropharynx.

6.2.3 Identify the muscles of the oral cavity.

6.2.4 Identify the muscles of the tongue.

6.2.5 Identify the salivary glands.

Assigned Readings:

Moore's COA: 936, 944-951, 1043-1044. See the blue boxes on pages 954-957 for clinical correlations. See the yellow boxes on pages 958-959 for "The Bottom Line."

Neuroanatomy: Pages 61, 536-538.

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	Step 1: Begin with a head cross section.
	Step 2: Add the palatopharyngeus muscle.
	Step 3: Add the stylopharyngeus.
	Step 4: Add the salpingopharyngeus.
	Step 5: Add the palatoglossus muscle.

	What is the function of these muscles?
The palatopharyngeus, salpingopharyngeus and stylopharyngeus elevate the soft palate and effectively close the nasopharynx. The palatoglossus elevates the back of the tongue. All but the stylopharyngeus are all innervated by CN X. The stylopharyngeus is innervated by CN IX.

Step 6: Add the the oropharyngeal space which is enclosed by all these muscles and the constrictors.