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74 Cards in this Set

  • Front
  • Back
I
olfactory
II
optic
III
oculomotor
IV
trochlear
V
trigeminal
VI
abducent
VII
facial
VIII
vestibulocochlear
IX
glossopharyngeal
X
vagus
XI
accessory
XII
hypoglossal
I (olfactory) mediates
sense of smell - special somatic sensory
II (optic) mediates
vision and pupillary light reflex - special somatic sensory
I (olfactory) projects to
telencephalon
I (olfactory) enters skull through
crista galli of the cribiform plate of the ethmoid bone
II (optic) projects to
diencephalon

paired nerves cross at optic chiasm then project to diencephalon via optic tract
III (oculomotor) innervates
4 of the 6 extraocular muscles derived from somites and levator palpebrae - somatic motor

inferior oblique
superior rectus
inferior rectus
medial rectus
levator palpebrae
two components of III (oculomotor)
innervates 4 of 6 oculomotor muscles - somatic motor

cranial parasympathetic outflow pathway - general visceral motor
nerves of the cranial outflow pathway:

cranial parasympathetic nerves
III
VII
IX
X
superior rectus
extraocular muscle innervated by III
inferior rectus
extraocular muscle innervated by III
medial rectus
extraocular muscle innervated by III
inferior oblique
extraocular muscle innervated by III
levator palpebrae
innervated by III
III (oculomotor) enters skull at
orbit, through superior orbital fissure
III (oculomotor) exits brainstem at
midbrain, anteriorly
IV (trochlear) innervates
superior oblique muscle (extraocular) - somatic motor
IV (trochlear) enters skull at
orbit, through superior orbital fissure
IV (trochlear) exits brainstem at
midbrain, caudal to inferior colliculus
1st pharyngeal arch
V (trigeminal)
divisions of the trigeminal
V1 - ophthalmic
V2 - maxillary
V3 - mandibular
V1
ophthalmic division of the trigeminal
V2
maxillary division of the trigeminal
V3
mandibular division of the trigeminal
V1 (ophthalmic division of the trigeminal) mediates
pain touch temp pressure proprioception - general somatic sensory

face, ear, anterior half of scalp to vertex
V2 (maxillary division of the trigeminal) mediates
sensation from oral and palatial mucosa; nasopharynx - general visceral sensory
V3 (mandibular division of the trigeminal) innervates
muscles of mastication
tensors tympani
mylohyoid
anterior belly of digastric
anterior belly of digastric
V3
mylohyoid
V3
tensors tympani
V3
muscles of mastication
V3
V (trigeminal) exits brainstem at
pons
VI (abducent) innervates
laterl rectus muscle (extraocular) - somatic motor
VI (abducent) enters skull at
orbit, through superior orbital fissure
VI (abducent) exits brainstem at
pons/medulla border, medially
VII (facial) exits skull through
stylomastoid foramen
VII (facial) exits brainstem at
pons/medullar border, lateral to VI
2nd pharyngeal arch
VII (facial)
VII (facial) enters face through
internal auditory meatus and facial canal
VII (facial) mediates
taste on anterior 2/3 of tongue - special visceral sensory

sensation from the skin of the concha of the auricle - general visceral sensory
VII (facial) innervates
cranial parasympathetic outflow pathway - general visceral motor

muscles of facial expression - special visceral motor
VIII (vestibulocochlear) enters face at
internal auditory meatus

confined to temporal bone
VIII (vestibulocochlear) exits brainstem at
pons/medulla border, lateral to VII
VIII (vestibulocochlear) mediates
hearing and balance - special somatic sensory
3rd pharyngeal arch
IX (glossopharyngeal)
IX (glossopharyngeal) exits skull through
jugular foramen
IX (glossopharyngeal) exits brainstem at
medulla, from postolivary sulcus
IX (glossopharyngeal) mediates
taste for posterior 1/3 of tongue - special visceral sensory

carotid body - baroreception (bld pressure) - general visceral sensory

carotid sinus - chemoreception (bld CO2 and bld acidity) - general visceral sensory

sensation for skin of external ear, upper pharynx, tongue - general somatic sensory
IX (glossopharyngeal) innervates
cranial parasympathetic outflow pathway - general visceral motor

stylopharyngeus muscle and middle pharyngeal constrictor muscle - special visceral motor
X (vagus) exits skull through
jugular foramen
X (vagus) exits brainstem at
medulla, from postolivary sulcus
4th-6th pharyngeal arches
X (vagus)
X (vagus) mediates
taste - special visceral sensory

sensation to larynx, esophagus, trachea, abdominal and thoracic viscera, inner ear - general visceral sensory
X (vagus) innervates
parasympathetic cranial outflow pathway - general visceral motor

laryngeal and pharyngeal muscles - special visceral motor
XI (accessory) exits skull at
jugular foramen
XI (accessory) exits brainstem at
medulla, from postolivary sulcus
XI (accessory) innervates
sternocleidomastoid
trapezius
muscles of the larynx

somatic motor
XII (hypoglossal) exits brainstem at
medulla, between pyramid and inferior olive
XII (hypoglossal) exits skull through
hypoglossal canal
XII (hypoglossal) innervates
muscles of the tongue - somatic motor
name the innervations for each pharyngeal arch
1 - V
2 - VII
3 - IX
4 through 6 - X
which nerves have mediate the cranial parasympathetic outflow pathway (general visceral motor)?
III
VII
IX
X
which nerves mediate taste (special visceral sensory)?
VII
IX
X