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Block 5 Week 3 Dani > TBL-Spinal Cord Pathways > Flashcards

TBL-Spinal Cord Pathways Flashcards

1
Q

Dorsal rami of C1-4 are located in what region?

A

Suboccipital

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2
Q

C3-C5 make the roots of what named nerve?

A

Phrenic

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3
Q

At what level does the spinal cord end?

A

L1-L2

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4
Q

motor cell bodies are in what horn of the cord?

A

Ventral (anterior)

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5
Q

Biceps are innervated by what spinal level?

A

C5/6

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6
Q

Triceps are innervated by what spinal level?

A

C7 (6-8)

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7
Q

finger flexors are innervated by what spinal level?

A

C8

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8
Q

Knee is innervated by what spinal level?

A

L3

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9
Q

Ankle is innervated by what spinal level?

A

S1

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10
Q

sensory cell bodies are in what horn of the spinal cord?

A

Dorsal

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11
Q

Each dorsal root contains the input from all structures within its distribution, forming a (blank)

A

somite

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12
Q

What are the dermatomal levels for the following structures?

  1. Post head and neck
  2. Nipple
  3. Umbilicus
  4. Anus
A
  1. C2/3
  2. T4
  3. T10
  4. s4/c1
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13
Q

The anterior spinal artery occupies what groove on the spinal cord?

A

anterior median fissure

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14
Q

The anterior and posterior nerve rootlets emerge at the (blank) and (blank) sulci respectively.

A

anterolateral and posterolateral

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15
Q

What are the three funiculi of the white matter?

A

posterior, lateral, and anterior?

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16
Q

What are the four parts of the gray matter?

A

Anterior/ventral horn
posterior/dorsal horn
intermediate zones
lateral horns

17
Q

What is contained in the ventral horn of the cord?

A

motor neurons

lamina 8, 9, and part of 7

18
Q

what is contained in the dorsal horn of the cord?

A

sensory neurons

lamina 1-6

19
Q

intermediate zone of spinal cord gray contains what/

A

associate neurons

lamina 7

20
Q

what is in the lateral horns of the cord?

A

sympathetic neurons

21
Q

The substantia gelatinosa and proper sensory nucleus extend through the whole length of the cord and receive (blank) type of input

22
Q

Is the corticospinal tract ascending or descending?

A

Descending

23
Q

How many descending motor tracts are there?

24
Q

Corticospinal tract neurons arise from lamina 5 within which gyrus?

A

Precentral gyrus

25
Q

Is the corticospinal tract motor or sensory?

26
Q

Where do the axons of the corticospinal tract converge?

A

corona radiata

27
Q

What structure do the axons of the corticospinal tract create within the brain?

A

crus cerebri

28
Q

Does the CST completely decussate?

A

No, only 75-90% of the fibers form the largest portion, the lateral CST

29
Q

what is the smallest, uncrossed portion of the CST?

A

anterolateral CST

30
Q

Lateral CST runs through which funiculus?

Block 5 Week 3 Dani (12 decks)

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