Download Cranial Nerve Nucle

CRANIAL NERVES - LECTURE B
1
I
Optic Nerve
II
III
CRANIAL NERVE
NUCLEI B = VI - XII
V
VI
VII
VIII
IX
X
XII
Nuclei associated with cranial nerve VI - Abducens
Nuclei associated with
cranial nerve
VI
6
Abducens
3
Abducens
nucleus
Abducens
nerve
4
Somatic Motor Nuclei
Abducens
nucleus
Somatic Motor Nuclei
Oculomotor
nucleus
Abducens
nucleus
Somatic Motor Nuclei
Oculomotor
nucleus
Trochlear
nucleus
Abducens
nucleus
Somatic Motor Nuclei
Oculomotor
nucleus
Hypoglossal
nucleus
Trochlear
nucleus
Abducens
nucleus
Nuclei associated with cranial nerve VI - Abducens
Nuclei associated with
cranial nerve
VII
7
Facial
10
Genu of
the Facial
nerve
Abducens
nucleus
Facial
nucleus
Facial
nerve
Special visceral (Branchial) Motor Nuclei
Facial
motor nucleus
12
Special visceral (Branchial) Motor Nuclei
Trigeminal
motor nucleus
Facial
motor nucleus
13
Special visceral (Branchial) Motor Nuclei
Trigeminal
motor nucleus
Facial
motor nucleus
Nucleus
ambiguus
14
Facial nerve fibers
(looping around the abducens nucleus)
Facial motor nucleus
Abducens Nucleus
(eye muscle motoneurons)
Facial motor nucleus
(muscles of
facial expression)
Abducens
nucleus
Solitary nucleus
(outside)
Superior salivatory nucleus
Facial intermediate nerve
part of facial nerve carrying:
Motor
1)
motor output from the
superior salivatory nucleus
to some salivary glands (GVE)
Spinal trigeminal
nucleus
Facial
intermediate
nerve
Solitary tract
(inside)
Sensory
1) taste information from
the anterior 2/3 of the tongue to
solitary nucleus via the solitary
tract (SVA)
2) touch information from a
small patch of skin on the ear and
behind the ear to spinal trigeminal
nucleus (GSA)
16
General Visceral Motor Nuclei
Superior salivatory nucleus
17
General Visceral Motor Nuclei
Superior salivatory nucleus
Edinger-Westphal
nucleus
18
General Visceral Motor Nuclei
Inferior salivatory nucleus
Superior salivatory nucleus
Edinger-Westphal
nucleus
19
General Visceral Motor Nuclei
Dorsal motor nucleus of the vagus
Inferior salivatory nucleus
Superior salivatory nucleus
Edinger-Westphal
nucleus
20
Abducens
nucleus
Solitary nucleus
(outside)
Superior salivatory nucleus
Facial intermediate nerve
part of facial nerve carrying:
Motor
1)
motor output from the
superior salivatory nucleus
to some salivary glands (GVE)
Spinal trigeminal
nucleus
Facial
intermediate
nerve
Solitary tract
(inside)
Sensory
1) taste information from
the anterior 2/3 of the tongue to
solitary nucleus via the solitary
tract (SVA)
2) touch information from a
small patch of skin on the ear and
behind the ear to spinal trigeminal
nucleus (GSA)
21
Visceral Sensory Nuclei
Facial intermediate
Nerve (taste from anterior
2/3 of tongue to solitary
nucleus)
Solitary
Nucleus
Abducens
nucleus
Solitary nucleus
(outside)
Superior salivatory nucleus
Facial intermediate nerve
part of facial nerve carrying:
Motor
1)
motor output from the
superior salivatory nucleus
to some salivary glands (GVE)
Spinal trigeminal
nucleus
Facial
intermediate
nerve
Solitary tract
(inside)
Sensory
1) taste information from
the anterior 2/3 of the tongue to
solitary nucleus via the solitary
tract (SVA)
2) touch information from a
small patch of skin on the ear and
behind the ear to spinal trigeminal
nucleus (GSA)
23
Somatic Sensory Nuclei
Spinal
trigeminal
nucleus
Somatic Sensory Nuclei
Main sensory
trigeminal nucleus
Spinal
trigeminal
nucleus
Somatic Sensory Nuclei
Main sensory
trigeminal nucleus
Mesencephalic
trigeminal nucleus
Spinal
trigeminal
nucleus
Somatic Sensory Nuclei
Main sensory
trigeminal nucleus
Mesencephalic
trigeminal nucleus
Spinal
trigeminal
nucleus
Somatic Sensory Nuclei
Main sensory
trigeminal nucleus
Facial intermediate nerve
(touch from ear to spinal
trigeminal nucleus)
Mesencephalic
trigeminal nucleus
Spinal
trigeminal
nucleus
Nuclei associated with cranial nerve VI - Abducens
Nuclei associated with
cranial nerve
VIII
8
Vestibular-cochlear
29
Superior cerebellar
peduncle
Spinocerebellar fibers
(on route to the cerebellum)
Inferior cerebellar
peduncle
Middle cerebellar
peduncle
Superior
cochlear nucleus
Vestibulocochlear
Nerve VIII
Cochlear component
(carries auditory signals
from the
cochlea to the cochlear
nucleus)
Cochlear Part of VIIIth Nerve
30
Medial
vestibular
nucleus
Inferior
Cerebellar
peduncle
Vestibulocochlear Nerve VIII
vestibular component
(carries vestibular signals from the
vestibular labyrinth to the vestibular nuclei)
Inferior
vestibular
nucleus
Vestibular Part of VIIIth Nerve
31
Relationship between Cochlear & Vestibular Parts of VIIIth Nerve
Superior Cochlear
nucleus
Vestibulocochlear
Nerve VIII
Vestibular nuclei
32
Vestibular
nuclei
Spinal trigeminal
nucleus & tract
Hypoglossal
Nucleus
MLF
Solitary tract
& nucleus
Inferior cerebellar
peduncle
(spinocerebellar
fibers to cerebellum)
Cochlear Nucleus
(auditory information)
Spinothalamic
Tract
Medial
lemniscus
Inferior
olive
nucleus
Pyramidal
Tract
Abducens
nerve
(to eye muscle)
Pontine
Gray matter
(relay signals to cerebellum)
33
Nuclei associated with cranial nerve VI - Abducens
Nuclei associated with
cranial nerve
IX
9
Glossopharyngeal
34
Inferior salivatory nucleus
Solitary nucleus & tract
Spinal trigeminal Nucleus
Nucleus Ambiguus
(motoneurons for
larynx & pharynx
muscles)
Glossopharyngeal nerve IX
carries:
Motor
1)
output from motoneurons of muscles
in the pharynx from nucleus ambiguus
2)
motor output from the inferior
salivatory nucleus to some salivary glands
Sensory
1) taste information from posterior
1/3 of tongue to the solitary nucleus
via the solitary tract.
2)
touch information from the posterior
1/3 of the tongue, pharynx, some skin
around the ear, internal surface of ear
drum
to the spinal trigeminal tract
3)
Pressure signals from the carotid
35
artery
Special visceral (Branchial) Motor Nuclei
Nucleus
ambiguus
36
Special visceral (Branchial) Motor Nuclei
Trigeminal
motor nucleus
Nucleus
ambiguus
37
Special visceral (Branchial) Motor Nuclei
Trigeminal
motor nucleus
Facial
motor nucleus
Nucleus
ambiguus
38
Inferior salivatory nucleus
Solitary nucleus & tract
Spinal trigeminal Nucleus
Nucleus Ambiguus
(motoneurons for
larynx & pharynx
muscles)
Glossopharyngeal nerve IX
carries:
Motor
1)
output from motoneurons of muscles
in the pharynx from nucleus ambiguus
2)
motor output from the inferior
salivatory nucleus to some salivary glands
Sensory
1) taste information from posterior
1/3 of tongue to the solitary nucleus
via the solitary tract.
2)
touch information from the posterior
1/3 of the tongue, pharynx, some skin
around the ear, internal surface of ear
drum
to the spinal trigeminal tract
3)
Pressure signals from the carotid
39
artery
General Visceral Motor Nuclei
Inferior salivatory nucleus
40
General Visceral Motor Nuclei
Inferior salivatory nucleus
Edinger-Westphal
nucleus
41
General Visceral Motor Nuclei
Inferior salivatory nucleus
Superior salivatory nucleus
Edinger-Westphal
nucleus
42
General Visceral Motor Nuclei
Dorsal motor nucleus of the vagus
Inferior salivatory nucleus
Superior salivatory nucleus
Edinger-Westphal
nucleus
43
Inferior salivatory nucleus
Solitary nucleus & tract
Spinal trigeminal Nucleus
Nucleus Ambiguus
(motoneurons for
larynx & pharynx
muscles)
Glossopharyngeal nerve IX
carries:
Motor
1)
output from motoneurons of muscles
in the pharynx from nucleus ambiguus
2)
motor output from the inferior
salivatory nucleus to some salivary glands
Sensory
1) taste information from posterior
1/3 of tongue to the solitary nucleus
via the solitary tract.
2)
touch information from the posterior
1/3 of the tongue, pharynx, some skin
around the ear, internal surface of ear
drum
to the spinal trigeminal tract
3)
Pressure signals from the carotid
44
artery
Visceral Sensory Nuclei
Solitary
Nucleus
Visceral Sensory Nuclei
Facial intermediate
Nerve (taste from anterior
2/3 of tongue to solitary
nucleus)
Solitary
Nucleus
Visceral Sensory Nuclei
Facial intermediate
Nerve (taste from anterior
2/3 of tongue to solitary
nucleus)
Glossopharyngeal nerve
(taste from posterior 1/3
of tongue to solitary nucleus)
Solitary
Nucleus
Inferior salivatory nucleus
Solitary nucleus & tract
Spinal trigeminal Nucleus
Nucleus Ambiguus
(motoneurons for
larynx & pharynx
muscles)
Glossopharyngeal nerve IX
carries:
Motor
1)
output from motoneurons of muscles
in the pharynx from nucleus ambiguus
2)
motor output from the inferior
salivatory nucleus to some salivary glands
Sensory
1) taste information from posterior
1/3 of tongue to the solitary nucleus
via the solitary tract.
2)
touch information from the posterior
1/3 of the tongue, pharynx, some skin
around the ear, internal surface of ear
drum to the spinal trigeminal nucleus
3)
Pressure signals from the carotid
artery
48
Somatic Sensory Nuclei
Main sensory
trigeminal nucleus
Mesencephalic
trigeminal nucleus
Spinal
trigeminal
nucleus
Somatic Sensory Nuclei
Main sensory
trigeminal nucleus
Mesencephalic
trigeminal nucleus
Spinal
trigeminal
nucleus
Somatic Sensory Nuclei
Main sensory
trigeminal nucleus
Facial intermediate nerve
(touch from ear to spinal
trigeminal nucleus)
Mesencephalic
trigeminal nucleus
Spinal
trigeminal
nucleus
Somatic Sensory Nuclei
Main sensory
trigeminal nucleus
Mesencephalic
trigeminal nucleus
Facial intermediate nerve
Glossopharyngeal
(touch from ear to spinal
Nerve
trigeminal nucleus)
(touch from ear & pharynx
to spinal trigeminal)
Spinal
trigeminal
nucleus
Inferior salivatory nucleus
Solitary nucleus & tract
Spinal trigeminal Nucleus
Nucleus Ambiguus
(motoneurons for
larynx & pharynx
muscles)
Glossopharyngeal nerve IX
carries:
Motor
1)
output from motoneurons of muscles
in the pharynx from nucleus ambiguus
2)
motor output from the inferior
salivatory nucleus to some salivary glands
Sensory
1) taste information from posterior
1/3 of tongue to the solitary nucleus
via the solitary tract.
2)
touch information from the posterior
1/3 of the tongue, pharynx, some skin
around the ear, internal surface of ear
drum to the spinal trigeminal nucleus
3)
pressure signals from the carotid
artery
53
Visceral Sensory Nuclei
Facial intermediate
Nerve (taste from anterior
2/3 of tongue to solitary
nucleus)
Glossopharyngeal nerve
(taste from posterior 1/3
of tongue to solitary nucleus &
carotid pressure info)
Solitary
Nucleus
Nuclei associated with cranial nerve VI - Abducens
Nuclei associated with
cranial nerve
X
10
Vagus
55
Dorsal
motor nucleus
of the Vagus
Solitary
nucleus & tract
Nucleus
ambiguus
Spinal
trigeminal
nucleus
Roots of the vagus nerve X carries:
Motor
1)
motor signals to larynx & pharynx muscles from motoneurons in nucleus ambiguus.
2)
parasympathetic output to the larynx & pharynx & to organs of the chest & abdomen from the dorsal
motor nucleus of the vagus
Sensory
1)
touch signals from pharynx, external ear canal, external side of the ear drum, & skin of the ear
to the spinal trigeminal nucleus.
2) taste information from the epiglottis to the solitary nucleus
3) sensory signals from the larynx, trachea, esophagus, chest & abdomen viscera, & pressure & chemoreceptors
in the aorta to the caudal part of the solitary nucleus.
56
Special visceral (Branchial) Motor Nuclei
Nucleus
ambiguus
57
Special visceral (Branchial) Motor Nuclei
Facial
motor nucleus
Nucleus
ambiguus
58
Special visceral (Branchial) Motor Nuclei
Trigeminal
motor nucleus
Facial
motor nucleus
Nucleus
ambiguus
59
Dorsal
motor nucleus
of the Vagus
Solitary
nucleus & tract
Nucleus
ambiguus
Spinal
trigeminal
nucleus
Roots of the vagus nerve X carries:
Motor
1)
motor signals to larynx & pharynx muscles from motoneurons in nucleus ambiguus.
2)
parasympathetic output to the larynx & pharynx & to organs of the chest & abdomen from the dorsal
motor nucleus of the vagus
Sensory
1)
touch signals from pharynx, external ear canal, external side of the ear drum, & skin of the ear
to the spinal trigeminal nucleus.
2) taste information from the epiglottis to the solitary nucleus
3) sensory signals from the larynx, trachea, esophagus, chest & abdomen viscera, & pressure & chemoreceptors
in the aorta to the caudal part of the solitary nucleus.
60
Parasympathetic Cranial Nerve Nuclei
Sympathetic
BA
BA
BA
Parasympathetic Cranial Nerve Nuclei
Sympathetic
BA
BA
BA
Parasympathetic Cranial Nerve Nuclei
Sympathetic
BA
BA
BA
Parasympathetic Cranial Nerve Nuclei
Sympathetic
BA
BA
BA
Parasympathetic Cranial Nerve Nuclei
Sympathetic
BA
BA
BA
Parasympathetic Cranial Nerve Nuclei
Sympathetic
BA
BA
BA
Parasympathetic Cranial Nerve Nuclei
Sympathetic
BA
BA
BA
Parasympathetic Cranial Nerve Nuclei
Sympathetic
preganglionic neurons
BA
BA
BA
Parasympathetic Cranial Nerve Nuclei
Sympathetic
long
preganglionic
axon
preganglionic neurons
BA
BA
BA
Parasympathetic Cranial Nerve Nuclei
Sympathetic
BA
long
preganglionic
axon
ganglion
preganglionic neurons
BA
BA
Parasympathetic Cranial Nerve Nuclei
Sympathetic
BA
Short
postganglionic
axon
long
preganglionic
axon
ganglion
preganglionic neurons
BA
BA
Parasympathetic Cranial Nerve Nuclei
Sympathetic
BA
BA
BA
Parasympathetic Cranial Nerve Nuclei
Sympathetic
BA
BA
BA
Parasympathetic Cranial Nerve Nuclei
Sympathetic
BA
(Edinger-Westphal)
BA
BA
Parasympathetic Cranial Nerve Nuclei
Sympathetic
BA
BA
BA
Parasympathetic Cranial Nerve Nuclei
Sympathetic
BA
(superior salivatory)
BA
BA
Parasympathetic Cranial Nerve Nuclei
Sympathetic
BA
BA
BA
Parasympathetic Cranial Nerve Nuclei
Sympathetic
BA
(inferior salivatory)
BA
BA
Parasympathetic Cranial Nerve Nuclei
Sympathetic
BA
BA
BA
Parasympathetic Cranial Nerve Nuclei
Sympathetic
BA
(dorsal motor
nuc of the
vagus - DMX)
BA
BA
General Visceral Motor Nuclei
Dorsal motor nucleus of the vagus
81
General Visceral Motor Nuclei
Dorsal motor nucleus of the vagus
Inferior salivatory nucleus
82
General Visceral Motor Nuclei
Dorsal motor nucleus of the vagus
Inferior salivatory nucleus
Superior salivatory nucleus
83
General Visceral Motor Nuclei
Dorsal motor nucleus of the vagus
Inferior salivatory nucleus
Superior salivatory nucleus
Edinger-Westphal
nucleus
84
Dorsal
motor nucleus
of the Vagus
Solitary
nucleus & tract
Nucleus
ambiguus
Spinal
trigeminal
nucleus
Roots of the vagus nerve X carries:
Motor
1)
motor signals to larynx & pharynx muscles from motoneurons in nucleus ambiguus.
2)
parasympathetic output to the larynx & pharynx & to organs of the chest & abdomen from the dorsal
motor nucleus of the vagus
Sensory
1)
touch signals from pharynx, external ear canal, external side of the ear drum, & skin of the ear
to the spinal trigeminal nucleus.
2) taste information from the epiglottis to the solitary nucleus
3) sensory signals from the larynx, trachea, esophagus, chest & abdomen viscera, & pressure & chemoreceptors
in the aorta to the caudal part of the solitary nucleus.
85
Somatic Sensory Nuclei
Main sensory
trigeminal nucleus
Mesencephalic
trigeminal nucleus
Spinal
trigeminal
nucleus
Somatic Sensory Nuclei
Main sensory
trigeminal nucleus
Facial intermediate nerve
(touch from ear to spinal
trigeminal nucleus)
Mesencephalic
trigeminal nucleus
Spinal
trigeminal
nucleus
Somatic Sensory Nuclei
Main sensory
trigeminal nucleus
Mesencephalic
trigeminal nucleus
Facial intermediate nerve
Glossopharyngeal
(touch from ear to spinal
Nerve
trigeminal nucleus)
(touch from ear & pharynx
to spinal trigeminal)
Spinal
trigeminal
nucleus
Somatic Sensory Nuclei
Main sensory
trigeminal nucleus
Mesencephalic
trigeminal nucleus
Facial intermediate nerve
Glossopharyngeal
Vagus nerve
Spinal
(touch from ear to spinal
Nerve
(touch from ear trigeminal
trigeminal nucleus)
(touch from ear & pharynx & pharynx to nucleus
to spinal trigeminal)
spinal trigeminal)
Dorsal
motor nucleus
of the Vagus
Solitary
nucleus & tract
Nucleus
ambiguus
Spinal
trigeminal
nucleus
Roots of the vagus nerve X carries:
Motor
1)
motor signals to larynx & pharynx muscles from motoneurons in nucleus ambiguus.
2)
parasympathetic output to the larynx & pharynx & to organs of the chest & abdomen from the dorsal
motor nucleus of the vagus
Sensory
1)
touch signals from pharynx, external ear canal, external side of the ear drum, & skin of the ear
to the spinal trigeminal nucleus.
2) taste information from the epiglottis to the solitary nucleus
3) sensory signals from the larynx, trachea, esophagus, chest & abdomen viscera, & pressure & chemoreceptors
in the aorta to the caudal part of the solitary nucleus.
90
Visceral Sensory Nuclei
Solitary
Nucleus
Visceral Sensory Nuclei
Facial intermediate
Nerve (taste from anterior
2/3 of tongue to solitary
nucleus)
Solitary
Nucleus
Visceral Sensory Nuclei
Facial intermediate
Nerve (taste from anterior
2/3 of tongue to solitary
nucleus)
Glossopharyngeal nerve
(taste from posterior 1/3
of tongue to solitary nucleus)
Solitary
Nucleus
Visceral Sensory Nuclei
Facial intermediate
Nerve (taste from anterior
2/3 of tongue to solitary
nucleus)
Glossopharyngeal nerve
(taste from posterior 1/3
of tongue to solitary nucleus)
Solitary
Nucleus
Visceral Sensory Nuclei
Facial intermediate
Nerve (taste from anterior
2/3 of tongue to solitary
nucleus)
Glossopharyngeal nerve
(taste from posterior 1/3
of tongue to solitary nucleus)
Solitary
Nucleus
Vagus nerve
(taste from epiglottis to rostral solitary nucleus,
signals from the trachea, esophagus,
chest, abdomen & aorta to
caudal part of solitary nucleus)
Summary of 3 cranial nerves carrying taste information
SOLITARY
NUCLEUS
Rostral 1/2
(taste)
TONGUE
GENICULATE
GANGLION
VII - FACIAL
(facial
intermediate
nerve)
IX - GLOSSOPHARYNGEAL
ANTERIOR 2/3
PETROSAL
GANGLION
POSTERIOR 1/3
(SVA)
EPIGLOTTIS
X - VAGUS
Caudal 1/2
(autonomic sensory
processing)
(GVA)
NODOSE
GANGLION
Dorsal
motor nucleus
of the Vagus
Solitary
nucleus & tract
Nucleus
ambiguus
Spinal
trigeminal
nucleus
Roots of the vagus nerve X carries:
Motor
1)
motor signals to larynx & pharynx muscles from motoneurons in nucleus ambiguus.
2)
parasympathetic output to the larynx & pharynx & to organs of the chest & abdomen from the dorsal
motor nucleus of the vagus
Sensory
1)
touch signals from pharynx, external ear canal, external side of the ear drum, & skin of the ear
to the spinal trigeminal nucleus.
2) taste information from the epiglottis to the solitary nucleus
3) sensory signals from the larynx, trachea, esophagus, chest & abdomen viscera, & pressure & chemoreceptors
in the aorta to the caudal part of the solitary nucleus.
97
Nucleus Ambiguus
Lateral
(motoneurons for larynx
cuneate
& pharynx muscles)
nucleus
Vestibular Hypoglossal
nuclei
Nucleus
(tongue
motoneurons)
Solitary tract
& nucleus
DMX
MLF
Spinal trigeminal
nucleus & tract
Spinocerebellar
Tract
Spinothalamic
Tract
Vagus Nerve Rootlet
(motor commands
to viscera in body)
Medial lemniscus
(touch information
from body)
Hypoglossal nerve
(motor commands to tongue)
Pyramids
Inferior olive nucleus
(big input to cerebellum)
98
Nuclei associated with cranial nerve VI - Abducens
Nuclei associated with
cranial nerve
XI
11
Spinal Accessory
99
Spinal
accessory
nerve
Spinal
accessory
roots
Spinal accessory nucleus
(motoneurons for
sternocleidomastoid
& trapezius muscles)
100
Gracile fasciculus
Gracile Nucleus
Cuneate nucleus Cuneate fasciculus
Spinal
trigeminal
nucleus & tract
Spinal Accessory
Nucleus
MLF
Pyramidal Decussation
Pyramidal tract
Spinothalamic
Tract
103
Nuclei associated with cranial nerve VI - Abducens
Nuclei associated with
cranial nerve
XII
12
Hypoglossal
104
Vestibular
nuclei
Solitary
nucleus
& tract
Dorsal motor nuclei
of the vagus
External cuneate
nucleus
Spinal trigeminal
nucleus & tract
Nucleus
ambiguus
Hypoglossal nuclei
(motoneuron for
tongue muscles)
Inferior olive
Hypoglossal
nerve
Pyramidal
tract
105
Somatic Motor Nuclei
Hypoglossal
nucleus
Somatic Motor Nuclei
Hypoglossal
nucleus
Abducens
nucleus
Somatic Motor Nuclei
Hypoglossal
nucleus
Trochlear
nucleus
Abducens
nucleus
Somatic Motor Nuclei
Oculomotor
nucleus
Hypoglossal
nucleus
Trochlear
nucleus
Abducens
nucleus
Vestibular
nuclei
Lateral cuneate
nucleus
Hypoglossal
Nucleus
Solitary tract
& nucleus
Spinal trigeminal
nucleus & tract
DMX
IVth
ventricle
Inferior olive
Pyramidal tract
Medial lemniscus
110
Nuclei associated with cranial nerve VI - Abducens
Cranial nerve nuclei
column summaries
111
Sensory
GSA and SSA
Mesencephalic
Trigeminal V
(jaw muscle spindles)
Main Sensory
Trigeminal V
(face touch & proprioception)
Vestibular/
Cochlear
VIII
(vestibular & auditory
signals from the inner ear)
GENERAL SOMATIC
CRANIAL NERVE NUCLEI
Motor
GSE
Oculomotor III
(eye muscles)
Trochlear IV
(eye muscles)
Abducens VI
(eye muscles)
Spinal Trigeminal V
(face pain)
Hypoglossal XII
(tongue muscles)
Somatic Motor Nuclei
Oculomotor
nucleus
Hypoglossal
nucleus
Oculomotor
nerve
Trochlear
nerve
Hypoglossal
nerve
Trochlear
nucleus
Abducens
nerve
Abducens
nucleus
Sensory
GVA
GENERAL VISCERAL
CRANIAL NERVE NUCLEI
Motor
GVE
Edinger-Westphal III
(constricts pupil parasympathetic)
Superior salivatory VII
(drives salivary glands parasympathetic)
Inferior salivatory IX
(drives salivary glands parasympathetic)
Solitarius (caudal half)
VII, IX, X
(sensory information
for autonomic control)
Dorsal motor n. of X
(parasympathetic drive to
smooth muscles & organs
in chest and abdomen)
General Visceral Motor Nuclei
Dorsal motor nucleus of the vagus
Axons from the dorsal motor nucleus
of the vagus bound for the vagus nerve
Inferior salivatory nucleus
Superior salivatory nucleus
Axons from the
superior salivatory nucleus
bound for the facial nerve
Axons from the inferior
salivatory nucleus bound
for the glossopharyngeal nerve
Edinger-Westphal
nucleus
Edinger-Westphal
fibers bound for
the oculomotor nerve
115
Sensory
SVA
SPECIAL VISCERAL
CRANIAL NERVE NUCLEI
Motor
SVE
Motor Trigeminal V
(chewing muscles)
Solitarius (rostral half)
VII, IX, X
(taste)
Facial VII
(muscles of
facial expression)
n. Ambiguus IX, X
(muscles of the
pharynx & larynx)
Special visceral (Branchial) Motor Nuclei
Trigeminal
motor nucleus
Trigeminal
nerve
Facial
motor nerve
Facial
motor nucleus
Nucleus ambiguus
axons bound for
glossopharyngeal
& vagus nerves
Nucleus
ambiguus
117
Sensory
GSA and SSA
Mesencephalic
Trigeminal V
(jaw muscle spindles)
Main Sensory
Trigeminal V
(face touch & proprioception)
Vestibular/
Cochlear
VIII
(vestibular & auditory
signals from the inner ear)
GENERAL SOMATIC
CRANIAL NERVE NUCLEI
Motor
GSE
Oculomotor III
(eye muscles)
Trochlear IV
(eye muscles)
Abducens VI
(eye muscles)
Spinal Trigeminal V
(face pain)
Hypoglossal XII
(tongue muscles)
Somatic Sensory Nuclei
Main sensory
trigeminal nucleus
Trigeminal nerve
(touch, conscious& unconscious
proprioception, pain & temperature
from the head to main sensory
trigeminal nucleus, mesencephalic
trigeminal nucleus & spinal
trigeminal nucleus)
Mesencephalic
trigeminal tract
Mesencephalic
trigeminal nucleus
Spinal
Facial intermediate nerve
Glossopharyngeal
Vagus nerve
Spinal trigeminal
(touch from ear to spinal
Nerve
(touch from ear trigeminal
nerve
trigeminal nucleus)
(touch from ear & pharynx & pharynx to nucleus
to spinal trigeminal)
spinal trigeminal)
Sensory
GVA
VISCERAL
CRANIAL NERVE NUCLEI
Motor
GVE
Edinger-Westphal III
(constricts pupil parasympathetic)
Solitarius (rostral half)
VII, IX, X
(taste)
(special visceral)
Superior salivatory VII
(drives salivary glands parasympathetic)
Inferior salivatory IX
(drives salivary glands parasympathetic)
Solitarius (caudal half)
VII, IX, X
(sensory information
for autonomic control)
(general visceral)
Dorsal motor n. of X
(parasympathetic drive to
smooth muscles & organs
in chest and abdomen)
Visceral Sensory Nuclei
Facial intermediate
Nerve (taste from anterior
2/3 of tongue to solitary
nucleus)
Glossopharyngeal nerve
(taste from posterior 1/3
of tongue to solitary nucleus)
Solitary
Nucleus
Vagus nerve
(taste from epiglottis to rostral solitary nucleus,
signals from the trachea, esophagus,
chest, abdomen & aorta to
caudal part of solitary nucleus)
ende