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Flashcards in Introduction to the Brainstem Deck (56)
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1

What is the sensory function of CN7?

taste (ant 2/3 of tongue)

2

Which is the only CN that is crossed?

4

3

What is the solitary nucleus for?

taste- CN7, 9, 10

4

Basically, what does the middle cerebellar peduncle connect?

the cerebellum to the pons

5

Most cranial nerve lesions will have deficits _____ to the lesion.

ipsilateral

6

What CNs and nuclei comprise the corneal blink reflex?

  • afferent = spinal nucleus of V
  • efferent = motor nucleus of 7

7

Which CNs are found at the midbrain?

  • 3
  • 4

8

What part of the ventricular system travels thru the rostral medulla?

the 4th ventricle

9

Pre-para innervation to the heart, thoracic, and abdom viscera?

dorsal motor nucleus of 10 (vagus)

10

What is the major distinguishing feature of the ventral surface of the midbrain?

the peduncles

11

Name the tract:

  • Info carried: fine touch, vibration, proprioception
  • X: mid-medulla

DCML

12

The basal plate becomes the _____ of the spinal cord.

ventral horn

13

What does the spinal nucleus of V carry?

pain/temperature for the face

14

 (LR6SO4)3

all extraocular muscles are innervated by CN3 EXCEPT Lateral Rectus (CN6) and Superior Oblique (CN4)

15

What tests CN3?

the pupillary light reflex test (constriction of pupils in reaction to light)

16

What is the function of the nucleus ambiguous?

motor vagal neurons to muscles of the pharynx, larynx, stylopharyngeus muscle

17

What happens sometimes when the nucleus of CN6 is damaged?

the axons of CN7 also get damaged

18

Where is the superior colliculus found? What is its function?

  • on the dorsal surface of the midbrain
  • visual reflexes

19

What part of the ventricular system travels thru the midbrain?

the cerebral aqueduct

20

At the level of the medulla, what is the corticospinal tract traveling thru?

the pyramids

21

What info does the DCML carry? Where does it decussate?

  • fine touch, vibration, proprioception
  • X: mid-medulla

22

What info does the corticospinal tract carry? Where does it decussate?

  • motor
  • X: the base of the medulla (the spinomedullary junction)

23

CN3 emerges btw which 2 blood vessels?

the superior cerebellar and the posterior cerebral arteries

24

What does the mesencephalic nucleus of V carry?

proprioceptive info for the face

25

Name the 3 major spinal cord pathways.

  1. corticospinal tract
  2. DCML
  3. ALS

26

What is the motor function of CN7?

muscles of facial expression

27

Which CN nuclei are found in the midbrain?

  • 3
  • Edinger-Westfall nucleus
  • 4

28

An uncal herniation can cause a CN___ palsy.

3

29

Basically, what does the inferior cerebellar peduncle connect?

the cerebellum to the medulla

30

The alar plate becomes the _____ of the spinal cord.

dorsal horn