II. Anatomy: Cranial Nerves 9-11
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Lewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
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Lewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
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Lewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
III. Physiology
- Sensory for pain, touch and Temperature
- Mucosa of pharynx, fauces, and Palatine Tonsil
- Taste Sensation for posterior third of Tongue
- Motor with CN 9 to pharynx
IV. Anatomy
- Nucleii in Medulla
- Somatic Motor Nucleii
- Nucleus Ambiguous transmits signals for Swallowing
- Visceral Motor Nucleii
- Inferior Salivatory nucleus innervates Parotid Gland (via otic Ganglion)
- Visceral Sensory Nucleii
- Nucleus Solitarius transmits taste signals from posterior third of Tongue
- Also transmits signals from carotid body and carotid sinus
- Somatic Sensory Nucleii
- Spinal Nucleus of CN 5 transmits signals from External Ear and posterior third of Tongue
- Somatic Motor Nucleii
- Course
- Starts in one of four nucleii in the Medulla (see above)
- Passes through jugular foramen of skull
- Follows Internal Carotid Artery
- Passes under styloid process and then into pharynx
- Synapses at superior ganglia and inferior ganglia
V. Exam
- Done concurrently with Exam of CN 10
VI. References
- Gilman (1989) Manter and Gatz Essentials of Neuroanatomy and Neurophysiology, Davis, p. 87-113
- Goldberg (2014) Clinical Neuroanatomy, p. 24-39
- Netter (1997) Atlas Human Anatomy, ICON Learning, p. 110-129