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Neuroanatomy > Spinal Nerve Roots (Lecture #15) > Flashcards

Spinal Nerve Roots (Lecture #15) Flashcards

1
Q

where can the dorsal root ganglion be found? (landmark)

A

intervertebral foramen

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2
Q

dorsal root

A

first order sensory axons entering the spinal cord from a specific dermatome

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3
Q

ventral root

A

LMN axons leaving the spinal cord to go to that spinal cord level’s myotome

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4
Q

“nerve root” usually referes to

A

mixed spinal nerve

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5
Q

dermatome of back of head

A

C2

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6
Q

dermatome of nipples

A

T4

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7
Q

dermatome of umbilicus

A

T10

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8
Q

dermatome of “saddle area”

A

S3,4,5

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9
Q

dermatome of thumb

A

C6

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10
Q

dermatome of middle finger

A

C7

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11
Q

dermatome of little finger

A

C8

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12
Q

dermatome of medial calf

A

L4

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13
Q

dermatome of lateral calf and big toe

A

L5

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14
Q

dermatome of little toe and sole of foot

A

S1

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15
Q

what space is the cauda equina found in

A

subarachnoid space

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16
Q

radiculopathy

A

sensory or motor dysfunction caused by injury to a nerve cell

17
Q

muscle associated with C5 nerve root

A

deltoid (C5,6)

18
Q

reflex associated with C5 nerve root

A

biceps (C5,6)

brachioradialis (C5,6)

19
Q

dermatome associated with C5 nerve root

A

lateral upper arm over deltoid

20
Q

muscle associated with C6 nerve root

A 
biceps (C5,6)
wrist extensors (C5,6,7,8)
21
Q

reflex associated with C6 nerve root

A

biceps (C5,6)

brachioradialis (C5,6)

22
Q

dermatome associated with C6 nerve root

A

thumb/lateral arm

23
Q

muscle associated with C7 nerve root

A

triceps (C6,7,8)

24
Q

reflex associated with C7 nerve root

A

triceps (C6,7,8)

25
Q

dermatome associated with C7 nerve root

A

middle finger and middle of hand

26
Q

muscle associated with L4 nerve root

A

quads (L2,3,4)

27
Q

reflex associated with L4 nerve root

A

patellar (L4)

28
Q

dermatome associated with L4 nerve root

A

medial leg below knee

29
Q

muscle associated with L5 nerve root

A

tibialis anterior (L4,5)

30
Q

reflex associated with L5 nerve root

31
Q

dermatome associated with L5 nerve root

A

lateral leg below the knee; usually includes big toe

32
Q

muscle associated with S1 nerve root

A

gastroc/soleus (S1,2)

33
Q

reflex associated with S1 nerve root

A

achilles (S1)

34
Q

dermatome associated with S1 nerve root

A

lateral aspect of foot, little toe, sole of foot

35
Q

what nerve roots are affected in cauda equina syndrome

A

L2 and below

36
Q

what spinal level can you find conus medularis

Neuroanatomy (20 decks)

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