| back 1 - type: sensory
- function: smell
- connection to
brain: inferior
|
| back 2 - type: sensory
- function: functional vision
- connection to brain: diencephalon
|
| back 3 - type: sensory
- function: innervation of the muscles of
the eye (extraocular mvt)+ pupillary reflexes
(constrict/accommodate) (OPEN/CLOSE EYES)
- connection to
brain: anterior midbrain
- pathway: medial longtidual
fasciculus
|
| back 4 - type: motor (superior oblique)
- function: downward +
lateral eye movements (down + towards nose)
- connection to
brain: midbrain @inferiro colliculi
- pathway: medial
longitudinal fasciculus
|
| back 5 - type: motor (lateral rectus)
- function: outward lateral
eye mvt (left2right)
- connection to brain: lower pons
- pathway: medial longitudinal fasciculus
|
front 6 Eye Movement Dysfunction: CN III (3) | back 6 - Ptosis
- Lateral deviation
- Impaired pupillary
response
|
front 7 Eye Movement Dysfunction: CN IV (4) | back 7 - Difficulty with lateral movement
- Medial and vertical
deviation
- can't look towards nose
|
front 8 Eye Movement Dysfunction: CN VI (6) | back 8 - Difficulty with lateral movement
- Medial deviation
|
| back 9 - Type: mixed (sensory and motor)
- Function (sensory): sensation to face, head, inner oral
cavity, and cornea
- function (motor): innervates masseter
and temporalis muscle (CHEW FOOD)
- function (reflex):
afferent limb of corneal blink reflex
- connection to brain: posterior to the midbrain
- pathway: depends on the branch (light touch, slow nociceptive,
proprioceptive reflex)
|
| back 10 - Type: mixed (sensory and motor)
- Function (sensory): taste receptons (2/3 tongue)
- function (motor): facial expressions, eyelid closing, stapedius
muscle
- function (reflex): efferent limb of corneal blink
reflex
- connection to brain: between pons and medulla
- pathway: depends on the branch
|
front 11 CN VIII: Vestibulochochlear (8) | back 11 - Type: sensory (2 branches)
- Function (auditory): information form cochlea for
hearing
- function (motor): sensory info from semicircular
canals
- function (reflex): afferents for vestibulo-ocular
reflex (VOR)
- connection to brain: between pons and medulla
- pathway: depends on the branch
|
front 12 CN IX: Glossopharyngeal (9) | back 12 - Type: mixed (sensory and motor)
- Function (sensory): taste receptors (1/3 tongue)
- function (motor): swallow (1 muscle in pharynx)
- function (reflex): afferents for gag+swallow reflex
- connection to brain: nucleus ambiguous (medulla)
- pathway: depends on the branch
|
| back 13 - Type: 2 branches mixed (sensory and motor)
- Function (visceral: sensory): taste from palate and
epiglottis
- function (visceral: motor): parasympathetic to
heart, GI, and pulmonary systems
- function (reflex):
efferent to pharynx. larynx, and esophagus
- connection to brain: nucleus ambiguous and dorsal nuclei
(medulla)
- pathway: depends on the branch
|
| back 14 - Type: motor
- Function: efferents to sternocleidomastoid
(shoulder+neck mvt)
- connection to brain: spinal cord
(C1-5)
- pathway: medial longitudinal fasciculus
|
| back 15 - Type: motor
- Function: muscles of larynx (elevation at
swallowing), tongue mvt (eat, speak, swallow)
- connection to
brain: nucleus ambiguous (joins CN X)
- pathway: medial longitudinal fasciculus
|