What is the sensory function of CN7?
taste (ant 2/3 of tongue)
Which is the only CN that is crossed?
What is the solitary nucleus for?
taste- CN7, 9, 10
Basically, what does the middle cerebellar peduncle connect?
the cerebellum to the pons
Most cranial nerve lesions will have deficits _____ to the lesion.
What CNs and nuclei comprise the corneal blink reflex?
- afferent = spinal nucleus of V
- efferent = motor nucleus of 7
Which CNs are found at the midbrain?
What part of the ventricular system travels thru the rostral medulla?
the 4th ventricle
Pre-para innervation to the heart, thoracic, and abdom viscera?
dorsal motor nucleus of 10 (vagus)
What is the major distinguishing feature of the ventral surface of the midbrain?
Name the tract:
- Info carried: fine touch, vibration, proprioception
- X: mid-medulla
The basal plate becomes the _____ of the spinal cord.
What does the spinal nucleus of V carry?
pain/temperature for the face
all extraocular muscles are innervated by CN3 EXCEPT Lateral Rectus (CN6) and Superior Oblique (CN4)
What tests CN3?
the pupillary light reflex test (constriction of pupils in reaction to light)
What is the function of the nucleus ambiguous?
motor vagal neurons to muscles of the pharynx, larynx, stylopharyngeus muscle
What happens sometimes when the nucleus of CN6 is damaged?
the axons of CN7 also get damaged
Where is the superior colliculus found? What is its function?
- on the dorsal surface of the midbrain
- visual reflexes
What part of the ventricular system travels thru the midbrain?
the cerebral aqueduct
At the level of the medulla, what is the corticospinal tract traveling thru?
What info does the DCML carry? Where does it decussate?
- fine touch, vibration, proprioception
- X: mid-medulla
What info does the corticospinal tract carry? Where does it decussate?
- X: the base of the medulla (the spinomedullary junction)
CN3 emerges btw which 2 blood vessels?
the superior cerebellar and the posterior cerebral arteries
What does the mesencephalic nucleus of V carry?
proprioceptive info for the face
Name the 3 major spinal cord pathways.
- corticospinal tract
What is the motor function of CN7?
muscles of facial expression
Which CN nuclei are found in the midbrain?
- Edinger-Westfall nucleus
An uncal herniation can cause a CN___ palsy.
Basically, what does the inferior cerebellar peduncle connect?
the cerebellum to the medulla
The alar plate becomes the _____ of the spinal cord.