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Cranial Nerves
Cranial Nerves
40
Medical
Graduate
09/11/2010

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Term
Function of GSE fibers
Definition
motor to skeletal mm
Term
Function of GVE fibers
Definition
motor to viscera
Term
Function of GSA fibers
Definition
sensory from skin
Term
Function of GVA fibers
Definition
sensory from viscera
Term
Function of BE
Definition
motor to mm. derived from branchial arches
Term
Function of SSA
Definition
sensory of hearing, balance, and sight
Term
Function of SVA
Definition
sensory of smell and taste
Term
Three fiber types that have brain stem nuclei
Definition
Term
Fiber types of CN I
Definition
SVA, olfactory bulbs
Term
Fiber types of CN II
Definition
SSA
Term
Fiber types of CN III
Definition
GSE (oculomotor nucleus), GVE (Edinger-Westphal nucleus)
Term
Fiber types of CN IV
Definition
GSE, trochlear nucleus
Term
Fiber types of CN V
Definition
GSA, BE (masticatory nucles)
Term
Fiber types of CN VI
Definition
GSE, abducens nucleus
Term
Fiber types of VII
Definition
GVE (superior salivatory nucleus), BE (facial nucleus), GSA, SVA
Term
Fiber types of VIII
Definition
SSA
Term
Fiber types of IX
Definition
GVE (inferior salivatory nucleus), BE (nucleus ambiguous), SVA, GVA
Term
Fiber types of X
Definition
GVE (dorsal motor nucleus), BE (nucleus ambiguous), GVA, SVA
Term
Fiber types of CN XI
Definition
GVE, nucleus ambiguous
Term
Fiber types of XII
Definition
GSE, hypoglossal nucleus
Term
structures supplied by GSE column
Definition
Extraocular, tongue mm
Term
Structures innervated by BE column
Definition
stylopharyngeus, larynx, pharynx, SCM, and trapezius mm.
Term
four parasympathetic relay stations in brain
Definition
ciliary, p2, otic, and submandibular ganglions
Term
What is different about the Edinger-Westphal nucleus
Definition
different cell bodies than those in oculomotor nucleus. supplies intrinsic eye mm. preganglionic cell bodies in EW nucleus. postganglionic cell bodies in ciliary ganglion.
Term
Location of post and preganglionic nuclei of superior salivatory nucleus (VII) and what they innervate
Definition
preganglionic- cell bodies in superior salivatory nucleus, innervate submandibular and sublingual salivary glands, lacrimal gland, and mucous of nose, palate, nasopharynx, and orbit

postganglionic cell bodies: in submandibular ganglion and P2 ganglion. submandibular ganglion nerves innervate submandibular and sublingual salivary glands. P2 ganglion nerves innervate lacrimal and mucous glands.
Term
Location of preganglionic and postganglionic cell bodies and what they innervate (inferior salivatory nucleus)
Definition
preganglionic: inferior salivatory nucleus (IX), innervate inferior salivatory nucleus via the lesser petrosal nerve

postganglionic: cell bodies in otic ganglion, innervate salivatory gland via auriculotemporal n.
Term
postganglion and preganglionic cell bodies of dorsal motor nucleus (X) and what they innervate
Definition
preganglionic: dorsal motor nucleus

postganglionic: paramural or intramural ganglia, innervate thyroid, thoracic, and abdominal organs
Term
innervation of 1st arch
Definition
trigeminal (V)
Term
innervation of 2nd arch
Definition
facial (VII)
Term
innervation of 3rd arch
Definition
glossopharyngeal (IX)
Term
innervation of 4th and 6th arches
Definition
vagus (X)
Term
Innervation of vagus, with exceptions
Definition
tongue (except palatoglossus- XII), palate (except tensor palati- V), and pharynx (except stylopharyngeus - IX)
Term
what is portio minor, what types of fibers does it have?
Definition
smaller root of trigeminal nerve carrying motor neurons, joins mandibular nerves. carries motor and propriocetpive fibers to 1st arch muscles.
Term
what is nervus intermedius, and what fibers does it have
Definition
component of VII (facial), both sensory (SVA, GSA, and GVA), and motor. similar to portio minor b/c both have GVE. different b/c nervus intermedius have small sensory roots while portio minor has short motor fibers.
Term
Supply of motor and sensory fibers to pharyngeal plexus
Definition
motor (X), sensory (IX)
Term
lymph node below digastric and where it receives drainage
Definition
jugulodigastric ln, receives drainage from pharynx, palatine tonsil, and tongue.
Term
What is the waldeyer's ring, what is the clinical significance
Definition
formed by lingual, palatine, and nasopharyngeal tonsils. if enlarged, can close pharyngotympanic tube
Term
AKA for parotid duct
Definition
Stenson's duct
Term
AKA for submandibular duct
Definition
Wharton's duct
Term
AKAs for nasopharyngeal tonsil
Definition
pharyngeal tonsil, adenoid
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