Table 1 - Innervation and actions of masticatory and facial muscles involved in oropharyngeal swallowing
From the following article
Physiology of oral cavity, pharynx and upper esophageal sphincter
Benson T. Massey
GI Motility online (2006)
doi:10.1038/gimo2
| Functional Group | Muscle | Innervation | Site of motor neurons | Function in deglutition |
|---|---|---|---|---|
| Masticatory | Temporalis | Mandibular branch (CN V) | CN V nucleus (pons) | Raise/brace mandible; chewing, closing oral cavity |
| Masseter | Mandibular branch (CN V) | CN V nucleus (pons) | Raise/brace mandible; chewing, closing oral cavity | |
| Medial pterygoid | Mandibular branch (CN V) | CN V nucleus (pons) | Raise/brace mandible; chewing, closing oral cavity | |
| Lateral pterygoid | Mandibular branch (CN V) | CN V nucleus (pons) | Lower/protrude/rock mandible; chewing | |
| Facial | Orbicularis oris | Facial nerve (CN VII) | Facial nucleus (pons) | Seal lips/mouth |
| Buccinator | Facial nerve (CN VII) | Facial nucleus (pons) | Push food toward teeth during mastication, help close mouth |
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