Medulla BASICS Flashcards

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1
Q

hypoglossal nucleus

A

CN XII

  • medial
  • intrinsic/extrinsic muscles of tongue

Lesion:

  • ipsilateral deviation
  • ipsilateral fasiculations
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2
Q

dorsal motor nucleus of X

A

CN X

  • medial
  • preganglionic parasympathetics to thorax/abdomen
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3
Q

ambiguus nucleus

A

CN IX, X

  • lateral
  • larynx, pharynx, soft palate

Lesion

  • hoarseness
  • dysphagia
  • ipsilateral droop of soft palate arch
  • contralateral deviation of uvula
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4
Q

solitarius nucleus

A

CN VII, IX, X

  • lateral
  • taste/sensation from tongue
  • sensation from viscera
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5
Q

spinal V nucleus

A

CN V (some VII, IX, X)

  • lateral
  • pain/temp to face/oral cavity

Lesion
-ipsilateral sensory deficit of FACE

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6
Q

spinothalamic tract

A
  • lateral
  • localization of pain/temp in body

Lesion:
-contralateral sensory deficit of body

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7
Q

corticospinal tract

A
  • medial, ventral
  • voluntary fine movement of distal extremities

Lesion

  • contralateral deficit
  • UMN signs
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8
Q

medial lemniscus

A
  • medial
  • above decussation of dorsal spinal pathway

Lesion:
-contralateral loss of position/vibration in body

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9
Q

reticular formation

A
  • core

- respiration, HR, BP

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10
Q

inferior cerebellar peduncle

A

-major communication cable btwn medulla and cerebellum

Lesion:
-ipsilateral ataxia

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11
Q

what structures are affected in a lateral medullary lesion?

A
  • ambiguus nucleus
  • spinothalamic tract
  • spinal nucleus of V
  • vestibular nucleus
  • solitarius nucleus
  • sympathetic fibers leaving from dorsal motor nucleus of X
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12
Q

what structures are affected in a medial medullary lesion?

A
  • medial lemniscus
  • corticospinal tract
  • motor fibers leaving from hypoglossal nucleus
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