Spinal Nerves, Dermatomes, and Cranial Nerves Handout for Cranial Nerves.
9, 10 & 11 cranial nerves
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Transcript of 9, 10 & 11 cranial nerves
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Glossopharyngeal, vagus & accessory nerve complexes
Dr / Hytham Nafady
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Introduction
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Nuclei • The glossopharyngeal & vagus nerves arise from 3
nucleus columns.
Special visceral motor column of the medulla
Nucleus ambiguus
Preganglionic parasympathetic column
Dorsal motor nucleus of vagus
Visceral sensory column Solitary nucleus
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3-nucleus ambiguus
1-solitary nucleus
2-dorsal motor nucleus
Vagus nerve
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3-nucleus ambiguus
2-dorsal motor nucleus
1-solitary nucleus
Vagus nerve
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Jugular foramen
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Sphenoid spine
Vaginal process
Hypoglossal canal
Stylomastoid foramen
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Carotico-jugular spine
Facial nerve canal
Sigmoid sinus
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Facial nerve canal
Petro-occipital fissure
Jugular spine
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Cochlear aqueduct Hypotympanum
Petro-occipital fissure
Petro-occipital fissure
Foramen lacerum
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Cn10&11
Interjugular process
septum
Cn9
Sigmoid sinus
ICA
IPS Cn9
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IPS
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Cn9
IPS IPS
Sigmoid sinus
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Vagus nerve
Vagus nerve
Pharyngeal plexus
Pharyngeal plexus
SuperiorLaryngeal
nerve
SuperiorLaryngeal
nerve
RecurrentLaryngeal
Nerve
RecurrentLaryngeal
Nerve
External Laryngeal
nerve
External Laryngeal
nerve
Internal Laryngeal
nerve
Internal Laryngeal
nerve
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A. Pharyngeal plexus
B. superior laryngeal N.
C. internal laryngeal N.
D. external laryngeal N.
E. recurrent laryngeal N.
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Ultrasound imaging of Vagus N.
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Vagus N.
Recurrent laryngeal
N.
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Vagus N.CCA
IJV
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Plexiform neurofibroma of the vagus nerve in patient with NF1
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Perineural tumor spread along 9, 10 & 11 cranial nerves from left parotid
acinic cell carcinoma
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Glomus vagale
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Ultrasound imaging of spinal accessory N.
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Inferior tympanic canaliculus
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Inferior tympanic canaliculus
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Aberrant internal carotid artery with enlarged inferior tympanic canaliculus
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Vascular loop compression
VA
Vagus N
VA
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Vascular loop compression of the glossopharyngeal N.
• Glossopharyngeal neuralgia in a 56-year-old woman due to neurovascular contact between the left CN IX and the vertebral artery
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GP hiatus
GP N.
GP N.
GP N.PICA A
VA
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Atrophy of posterior crico-arytenoid muscle
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Rt posterior cricoarytenoid
Lt posterior cricoarytenoid
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Atrophy of thyro-arytenoid muscle
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Thyro-arytenoid Ligament
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Trapezius muscle atrophy
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Atrophy of trapezius muscle & hypertrophy of levator scapulae muscle
after radical neck dissection