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Block 5; Week 3 > TBL Prep > Flashcards

TBL Prep Flashcards

1
Q

What is the most common cause of spinal cord injury? What are the components that are damaged?

A

trauma

motor, sensory, autonomic fcn compromised

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2
Q

What are the vertebrae in each section of the body? Where does the spinal cord extend?

A

7 Cervical; 12 thoracic; 5 lumbar; 5 sacral fused

foramen magnum–L2 (l3 @ birth)

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3
Q

Describe the 31 segments of the spinal cord.

A 
8 cervical
12 thoracic
5 lumbar
5 sacral
1 coccygeal
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4
Q

Where do the spinal nerves emerge?

A

cervical 1–>7: emerge above the vertebrae
C8 below the 7th cervical vertebrae
the rest of the nerves then come out below the respective vertebrae

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5
Q

Where are the dorsal rami of C1-C4 located?

A

they are located in the sub occipital region

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6
Q

What does the dorsal ramus of C1 innervate?

A

innervation of neck muscles

including semispinalis capitis muscle

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7
Q

What does the dorsal ramus of C2 innervate?

A

sensation of back of head & scalp

motor innervation to some neck muscles

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8
Q

What’s the deal w/ the innervation of dorsal rami of C3-C5?

A

formation of phrenic nerve

innervation of the diaphragm

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9
Q

What’s the deal with the innervation of the dorsal rami of C5-T1?

A

they provide motor control for upper extremities & their muscles

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10
Q

The 12 segments of the thoracic cord provide motor control to what?

A

thoracoabdominal musculature

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11
Q

Which section of the spinal cord gives motor innervation to the lower extremities & their related muscles?

A

L2-S2

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12
Q

What makes up the cauda equina?

A

this is a collection of lumbar & sacral nerve roots

they travel together caudally until they leave their respective intervertebral foramina

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13
Q

What are the spinal cord levels that are involved in the reflex of the biceps?

A

C5/C6

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14
Q

What are the spinal cord levels that are involved in the reflex of the brachioradialis?

A

C5/C6

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15
Q

What are the spinal cord levels that are involved in the reflex of the triceps?

A 
C7
Anatomic Variations (C6-C8)
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16
Q

What are the spinal cord levels that are involved in the reflex of the finger flexors?

A 
C8
Anatomic Variations (C7-T1)
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17
Q

What are the spinal cord levels that are involved in the reflex of the knee?

A 
L3
Anatomic Variations (L2-L4)
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18
Q

What are the spinal cord levels that are involved in the reflex of the ankle?

A 
S1
Anatomic Variations (L5-S2)
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19
Q

Where are the cell bodies of the ventral motor roots located?

A

in the anterior horn of the spinal cord

20
Q

Where are the cell bodies of the dorsal sensory roots located?

A

in the DRG

carry info like dermatomes

21
Q

What’s the dermatome that corresponds to the following?

C2/C3

A

posterior head & neck

22
Q

What’s the dermatome that corresponds to the following?

C4 & T2…kinda weird

A

these dermatomes are found in the upper thorax, they are actually adjacent to each other

23
Q

What’s the dermatome that corresponds to the following?

T4/T5

A

nipple line

24
Q

What’s the dermatome that corresponds to the following?

T10

A

umbilicus

25
Q

What’s the dermatome that corresponds to the following?

C5

A

anterior shoulder

26
Q

What’s the dermatome that corresponds to the following?

C6

A

thumb

six shooter

27
Q

What’s the dermatome that corresponds to the following?

C7

A

index & middle fingers

28
Q

What’s the dermatome that corresponds to the following?

C7/C8

A

ring finger

29
Q

What’s the dermatome that corresponds to the following?

C8

A

pinky finger

30
Q

What’s the dermatome that corresponds to the following?

T1

A

inner forearm

31
Q

What’s the dermatome that corresponds to the following?

T2

A

upper inner arm

32
Q

What’s the dermatome that corresponds to the following?

T2/T3

A

axilla

33
Q

What’s the dermatome that corresponds to the following?

L1

A

anterior upper inner thigh

34
Q

What’s the dermatome that corresponds to the following?

L2

A

anterior upper thigh

35
Q

What’s the dermatome that corresponds to the following?

L3

A

knee

36
Q

What’s the dermatome that corresponds to the following?

L4

A

medial malleolus

37
Q

What’s the dermatome that corresponds to the following?

L5

A

dorsum of foot

toes 1-3

38
Q

What’s the dermatome that corresponds to the following?

S1

A

toes 4 & 5

lateral malleolus

39
Q

What’s the dermatome that corresponds to the following?

S3/C1

A

anus

40
Q

Which structure is found in the anterior median fissure?

A

anterior spinal artery

41
Q

Where do the anterior & posterior nerve rootlets emerge?

A

anterolateral & posterolateral sulci

42
Q

What are the 3 funiculi that are found in the white matter of the spinal cord?

A

posterior, lateral, and anterior funiculi

**contain ascending & descending tracts

43
Q

The grey matter of the spinal cord can be divided into 4 parts or ____ laminae/layers.

A

10 layers

44
Q

What is found in the anterior or ventral horn of the spinal cord?

A

motor neurons

laminae 8, 9, part of 7

45
Q

What is found in the posterior or dorsal horn of the spinal cord?

A

sensory neurons

laminae 1-6

46
Q

What is found in the intermediate zones of the grey matter of the spinal cord?

A

associate neurons, laminae 7

lateral horns in regions of thorax-lumbar–>for sympathetic neurons.

47
Q

The gray matter is also arranged into columns or nuclei. Describe some of these nuclei.

A

Substantia Gelatinosa & Proper Sensory Nucleus–>go thru the whole spinal cord & receive pain impulses
Nucleus of Clarke-only present in certain parts of the spinal cord

Block 5; Week 3 (9 decks)

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