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7303 Neuroanatomy > FSG 3 > Flashcards

FSG 3 Flashcards

1
Q

Which CNs come off the midbrain?

A

3

4

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2
Q

Which CNs come off the pons?

A

5-8

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3
Q

Which CNs come off the medulla?

A

9-12

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4
Q

What are the UMN tracts that begin in the brainstem? (5)

A
  • rubrospinal
  • reticulospinal
  • raphespinal
  • ceruleospinal
  • vestibulospinal
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5
Q

function of the rubrospinal tract

A

extends wrist and fingers (input from cerebellum)

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6
Q

function of the reticulospinal tract

A

coordinates trunk activity and proximal limbs when walking

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7
Q

function of the raphespinal tract

A

enhances activity of interneurons and motor neurons throughout the SC

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8
Q

function of the ceruleospinal tract

A

same as raphespinal - enhancing interneuron/motor neuron activity

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9
Q

function of the vestibulospinal tract

A
  • medial: control neck and upper back muscles

- lateral: LMN to extensors (for COG)

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10
Q

What are the longitudinal sections of the brainstem?

A
  • anterior/basilar
  • middle/tegmentum
  • posterior/tectum
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11
Q

basilar section function

A

motor

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12
Q

tegmentum function

A
  • sensory
  • CN function
  • RF is also here
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13
Q

tectum function

A

reflexive movement of head and eyes

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14
Q

What is the “core” of the brainstem?

A

RF

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15
Q

What forms the RF?

A
  • reticular nuclei

- ascending/descending reticular pathways

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16
Q

Functions of RF

A
  • integrates sensory/cortical
  • regulates somatic, autonomic, and consciousness
  • modulates nociceptive info
17
Q

What are the 4 RF nuclei and their NMs?

A
  • VTA (dopamine)
  • PPN (acetylcholine)
  • raphe nuclei (serotonin)
  • locus ceruleus and medial reticular area (norepi)
18
Q

NM vs NT

A
  • NM is slower

- NM doesn’t have to be released from synaptic cleft (but can be)

19
Q

Where does the VTA project? (4)

A
  • ventral striatum
  • hippocampus
  • amygdala
  • prefrontal cortex
20
Q

Where does the PPN project? (5)

A
  • prefrontal cortex
  • thalamus
  • GP, STN
  • limbic system (hippo/amyg)
  • origin of RST
21
Q

Where do the Raphe nuclei project? (7)

A
  • cerebrum
  • thalamus
  • tectum
  • striatum
  • amygdala
  • hippocampus
  • SC
22
Q

Where does the locus ceruleus and medial reticular area project?

A

same targets as Raphe nuclei

23
Q

Function of the VTA

A
  • reward center
  • motivation
  • decision making
24
Q

Function of PPN

A

influences movement, postural muscles

25
Q

Function of Raphe nuclei

A

modulation of arousal

26
Q

Funciton of Locus ceruleus?

A

directs attention

7303 Neuroanatomy (69 decks)

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