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22 spring: neurology > test 1: lab 3 > Flashcards

test 1: lab 3 Flashcards

1
Q

three regions of white matter in the spinal cord

A

dorsal funiculus

ventral funiculus

lateral funiculus

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2
Q

___ septum divides the white matter in the spinal cord

A

dorsal median septum (in the dorsal funiculus)

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3
Q

___ fissure divides the white matter on the ventral side

A

ventral median fissure

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4
Q

___ is where the rootlets enter the spinal cord

A

dorsolateral sulcus

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5
Q

divisions of the spinal grey matter

A

dorsal horn

intermediate zone

ventral horn

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6
Q

___ contains sensory inputs (somatic and visceral afferents)

A

dorsal root

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7
Q

___ contain somas of sensory afferents entering the spinal cord

A

DRG

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8
Q

___ motor outputs (somatic and visceral efferents)

A

ventral root

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9
Q

___ - mixed sensory and motor

A

spinal nerve

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10
Q

spinal cord ends below L1 vertebrae as the ___

A

conus medullaris

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11
Q

lumbar and sacral nerves after L1 form the ___

A

cauda equina

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12
Q

where?

A

cervical

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13
Q
A

thoracic

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14
Q
A

lumbar

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15
Q

ventral horns have info about ___

A

motor to muscles

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16
Q

where?

A

C8 ( large ventral horn sorta oval)

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17
Q

where are preganglionic sympathetic axons found in the spinal cord?

A

lateral horn (T1-L2)

18
Q

where do you find the preganglionic parasympathetic in the spinal cord?

A

S1-S3

19
Q

what kind of cells are in the intermediolateral cell column?

A

cells of the ANS

  • Preganglionic sympathetic (lateral horn; T1-L2)
  • Preganglionic parasympathetic (S1-S3)- rest and digest
20
Q

what is in the dorsal column of the spinal cord?

A
  • Fascicululs gracilis (hindlimb)
  • Fasciculus cuneatus (forelimb) (above T5)
21
Q

___ part of the dorsal column of the spinal cord that controls the frontlimb is found ___

A

Fasciculus cuneatus (forelimb)

(above T5)

22
Q

what kind of axons in white matter

A

myelinated

motor→ down

sensory →up

23
Q

ascending tracts in the spinal cord

A
24
Q
A

spinothalamic tract→ pain and temperature

anteriolateral tract

25
Q
A

ascending pathway

fasiculus cuneatus (upper body)

DC-ML → touch and proprioception

26
Q
A

ascending tract

fasiculus gracilis

lower body - touch and proprioception

DC-ML

27
Q
A

dorsal spinocerebellar tract

ascending tract

lower limb- unconscious proprioception

28
Q
A

lateral corticospinal tract

descending motor

29
Q
A

rubrospinal tract

descending motor

30
Q

ascending pathways to the neocortex

A

dorsal column - medial lemniscal tract (conscious proprioception/touch/vibration)

spinothalamic tract (pain/temperature)

31
Q

ascending pathways in the spinal cord to the cerebellum

A

for unconscious proprioception

  • *dorsal spinocerebellar trac**t-lower limb- clarke’s nucleus
  • *cuneocerebellar tract**- upper limb- accessory cuneate nucleus
32
Q
A

Dorsal Column - Medial Lemniscal Tract

from toe (soma in DRG)→ medulla → cross sides→ thalamus → cerebral cortex (somatosensory cortex)

Fasiculus gracilis – hindlimb S,L

Fasiculus cuneatus – forelimb T,C

33
Q

body map of the dorsal column

A

Fasiculus gracilis – hindlimb →Sacral, Lumbar

Fasiculus cuneatus – forelimb →Thoracic, Cervical

Somatotopy – body map

34
Q
A

spinothalamic tract

pain and temperature

sensory → dorsal horn → 2nd switches sides travels contralaterally up spinal cord up the (anterolateral tract)→ VPL of the thalamus → cerebral cortex (somatosensory cortex)

35
Q

two types of descending spinal pathway

A

ventromedial pathway → posture, balance, locomotion→ brainstem control

lateral pathway → voluntary movement of distal muscles→ cortical control

36
Q
  • Control of posture, locomotion, orienting and balance •Under brainstem control
  • Innervate axial and proximal musculature
A

ventromedial pathway

(descending spinal pathways- upper motor neurons)

37
Q
  • Voluntary movement of distal musculature
  • Under direct cortical control
  • Innervate distal musculature
A

lateral pathway

descending spinal pathway (upper motor neurons)

38
Q

what pathway allows detailed finger movement

A

corticospinal tract

(upper motor neuron)

descending pathway

change sides

39
Q

Where in the spinal cord can you find ANS?

A

Intermediolateral cell columns:

Sympathetic: thoracolumbar (in lateral horn, T1-L2) Parasympathetic: craniosacral (S1-S3)

40
Q

what part of the ANS uses norepinephrine?

A

sympathetic

41
Q

what part of the ANS use ACh?

A

22 spring: neurology (26 decks)

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