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aNeuro Exam 3- Lindsey's > Introduction to the Brainstem > Flashcards

Introduction to the Brainstem Flashcards

1
Q

What is the sensory function of CN7?

A

taste (ant 2/3 of tongue)

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2
Q

Which is the only CN that is crossed?

A

4

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3
Q

What is the solitary nucleus for?

A

taste- CN7, 9, 10

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4
Q

Basically, what does the middle cerebellar peduncle connect?

A

the cerebellum to the pons

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5
Q

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

A

ipsilateral

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6
Q

What CNs and nuclei comprise the corneal blink reflex?

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

Which CNs are found at the midbrain?

A
  • 3
  • 4
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8
Q

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

A

the 4th ventricle

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9
Q

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

A

dorsal motor nucleus of 10 (vagus)

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10
Q

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

A

the peduncles

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11
Q

Name the tract:

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

DCML

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12
Q

The basal plate becomes the _____ of the spinal cord.

A

ventral horn

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13
Q

What does the spinal nucleus of V carry?

A

pain/temperature for the face

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14
Q

(LR6SO4)3

A

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

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15
Q

What tests CN3?

A

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

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16
Q

What is the function of the nucleus ambiguous?

A

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

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17
Q

What happens sometimes when the nucleus of CN6 is damaged?

A

the axons of CN7 also get damaged

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18
Q

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

A
  • on the dorsal surface of the midbrain
  • visual reflexes
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19
Q

What part of the ventricular system travels thru the midbrain?

A

the cerebral aqueduct

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20
Q

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

A

the pyramids

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21
Q

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

A
  • fine touch, vibration, proprioception
  • X: mid-medulla
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22
Q

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

A
  • motor
  • X: the base of the medulla (the spinomedullary junction)
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23
Q

CN3 emerges btw which 2 blood vessels?

A

the superior cerebellar and the posterior cerebral arteries

24
Q

What does the mesencephalic nucleus of V carry?

A

proprioceptive info for the face

25
Q

Name the 3 major spinal cord pathways.

A
  1. corticospinal tract
  2. DCML
  3. ALS
26
Q

What is the motor function of CN7?

A

muscles of facial expression

27
Q

Which CN nuclei are found in the midbrain?

A
  • 3
  • Edinger-Westfall nucleus
  • 4
28
Q

An uncal herniation can cause a CN___ palsy.

A

3

29
Q

Basically, what does the inferior cerebellar peduncle connect?

A

the cerebellum to the medulla

30
Q

The alar plate becomes the _____ of the spinal cord.

A

dorsal horn

31
Q

What does the main sensory nucleus of V carry?

A

fine touch and vibration for the face

32
Q

Which CNs are found at the pons?

A
  • 5
  • 6
  • 7
  • 8
33
Q

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

A

the cerebral peduncles

34
Q

What is a peduncle?

A

a collection of tracts that travel together (a stalk)

35
Q

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

A
  • pain and temp
  • X: spinal cord
36
Q

Motor vagal neurons to muscles of the pharynx, larynx, stylopharyngeus muscle?

A

nucleus ambiguous

37
Q

Basically, what does the superior cerebellar peduncle connect?

A

the cerebellum to the midbrain (and thalamus)

38
Q

Old Opie Occasionally Tries Trigonometry And Feels Very Gloomy, Vague And Hypoactive

A

olfactory (I), optic (II), oculomotor (III), trochlear (IV), trigeminal (V), abducens (VI), facial (VII), vestibulocochlear (VIII), glossopharyngeal (IX), vagus (X), accessory (XI), hypoglossal (XII)

39
Q

Which CNs are found at the medulla?

A
  • 9
  • 10
  • 11
  • 12
40
Q

CN12 emerges btw the ____ and ____.

A

pyramid and olive

41
Q

What CN loops around CN6?

A

7

42
Q

What is the function of the dorsal motor nucleus of 10?

A

pre-para to the heart, thoracic, and abdom viscera

43
Q

Which CN nuclei are found in the pons?

A
  • 5 (mesencephalic, main motor, main sensory, and spinal nuclei)
  • 6
  • 7
  • 8 (cochlear and vestibular nuclei)
44
Q

What part of the ventricular system travels thru the pons?

A

the 4th ventricle

45
Q

Which is the largest and most lateral cerebellar peduncle?

A

the middle

46
Q

What are the 2 DCML ascending nuclei in the spinal cord? Where are they located relative to each other? What info do they each carry?

A
  1. the fasciculus gracilis (lower limbs)- medial
  2. the fasciculus cuneatus (upper limb)- lateral
47
Q

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

A
  • on the dorsal surface of the midbrain
  • auditory reflexes
48
Q

Which CN nuclei are found in the medulla?

A
  • 9 (nucleus of solitary tract)
  • 10 (nucleus of solitary tract, nucleus of vagus, ventral motor nucleus of vagus aka ambiguous)
  • 12 (hypoglossal nucleus)
49
Q

Name the tract:

  • Info carried: pain and temp
  • X: @ spinal cord
A

ALS

50
Q

Which CN motor nuclei are found along the midline of the brainstem?

A
  • 3
  • 4
  • 6
  • 12
  • *** (all factors of 12)
51
Q

What comprises the tectum of the brainstem?

A

the superior and inferior colliculi

52
Q

Name the tract:

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

corticospinal

53
Q

What CNs and nuclei comprise the pupillary light reflex?

A
  • afferent = optic nerve
  • efferent = parasymp division of 3 (Edinger-Westphal nucleus to ciliary ganglion)
54
Q

What CNs and nuclei comprise the jaw jerk reflex?

A
  • afferent = mesencephalic nucleus of V (stretch receptors of masseter)
  • efferent = main motor nucleus of V
55
Q

ASS BM =

A

alar sensory, sulcus limitans, basal motor

56
Q

What CNs and nuclei comprise the gag reflex?

A
  • afferent = 9 (sensory)
  • efferent = 10 (nucleus ambiguous)

aNeuro Exam 3- Lindsey's (20 decks)

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