Spinal Nerves and Testing Flashcards

1
Q

somatic motor supply is voluntary T or F

A

T, so only skeletal muscle

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2
Q

clinical somatic motor symptoms?

A

muscle stiffness, tightness, spasm
muscle weakness
ataxia

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3
Q

common location of a CVA that would affect sensory function?

A

internal capsule next to the thalamus

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4
Q

dorsal roots contain only __ information

A

sensory

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5
Q

spinal nerves contain both sensory and motor information T or F

A

T

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6
Q

if both sides of a dermatome are affected where would you suspect the lesion to be?

A

centrally

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7
Q

C1 has no sensory components T or F

A

T

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8
Q

how can you work out the dermatomes of the arm?

A

start with C5 and work round from superior arm round to armpit up to T2

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9
Q

where is the location of the C2 dermatome

A

back of scalp and adams apple

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10
Q

where is the location of the C3 dermatome

A

back of neck ad jugular notch

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11
Q

where is the location of the C4 dermatome

A

clavicle and shoulder tip

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12
Q

L1 dermatome?

A

groin (the whole area covered by your hands in your pockets)

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13
Q

S3,4,5 dermatomal area location?

A

around the anus (S5 being closest)

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14
Q

do anterior or posterior rami form plexuses?

A

anterior

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15
Q

what is a named nerve

A

a nerve containing axons from 1 or mre spinal cord levels eg plexus nerves

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16
Q

name the components of the cervical plexus

A

little goats tread softly

lesser occipital, great auricular, transverse cervical, supraclavicular

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17
Q

where do the nerves of the neck connect?

A

the nerve point at the midpoint of the posterior border of SCM

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18
Q

if someone has loss of sensation over the badge patch area, what 2 causes should you suspect?

A

is it dermatomal eg C5/6?

or is it an axillary nerve problem?

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19
Q

where does referred pain in MI go to (nerve levels)?

A

T1 and T2

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20
Q

dermatome level of pubic symphysis?

A

T12

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21
Q

how would you be able to tell if a patients loss of sensation in the webbing of the toe is a dermatomal or deep fib nerve issue?

A

if theyve also lost sensation in the dorsum of the foot it will probably be the nerve (bigger area covered), if its just the web of the big toe (aka just the dermatome) it will be a dermatome problem

22
Q

if you suspect 1 nerve root has been disrupted in a myotome but not the others, how can you confirm this?

A

test the myotome on the other side, if its stronger it could mean one root has been disrupted

23
Q

lower motor neuron lesions cause spasticity/flaccidity

A

flaccidity

24
Q

upper motor neuron lesions cause

A

spasticity

25
Q

myotome for triceps brachii

A

C7

26
Q

myotome for biceps brachii

A

C6

27
Q

spinal level tested by knee jerk reflex

A

L3

28
Q

spinal level tested by ankle jerk reflex

A

S1

29
Q

how would you do a tendon test for C6

A

test brachioradialis function

30
Q

CNS dysfunction is more widespread than PNS dysfunction T or F

A

T

31
Q

why are athletes likely to get neuropathies?

A

they have muscle hypertrophy which can compress nerves

32
Q

cutaneous innervation of T2-T12 is supplied by…

A

intercostal nerves

33
Q

cutaneous innervation of the lower anterolateral trunk is supplied by…

A

iliohypogastric and ilioinguinal nerves

34
Q

subcostal nerve is the anterior ramus of what nerve?

A

T12

35
Q

the cervical plexus is formed by the anterior rami of what spinal nerves?

A

C1-C4

36
Q

what provides the cutaneous innervation to the posterior neck?

A

posterior rami of C2-C8

37
Q

what does the lesser occipital nerve supply?

A

the skin posterior to the ear

38
Q

the great auricular nerve supplies…

A

the skin over the angle of the mandible and the folds and lobe of the auricle

39
Q

which nerve provides cutaneous innervation to the anterior neck?

A

transverse cervical nerve

40
Q

what supplies the skin over the clavicle and shoulder?

A

supraclavicular nerves

41
Q

what happens when a peripheral nerve is stimulated?

A

AP generated by receptors in the area’s dermatome and feeds its way back to the spinal cord via the posterior route (post = sensory)

42
Q

what does the cervical plexus innervate?

A

diaphragm via supraclavicular nerve

neck and postural strap muscles

43
Q

postural back muscles are supplied by posterior/anterior rami

A

posterior

44
Q

myotome for deltoid

A

C5

45
Q

myotome for anterior compartment of forearm

A

C8

46
Q

what does T1 myotome innervate?

A

dorsal interossei

47
Q

why is the L3 myotome tested in the knee jerk reflex?

A

L3 covers the extensor muscles of the thigh eg quadriceps femoris so shows that they’re extending the leg properly

48
Q

which myotome is for knee flexion?

A

S2

49
Q

what muscles are tested in the L4 myotome and for what movement?

A

tibialis anterior

ankle dorsiflexion

50
Q

what muscles are tested in the L5 myotome?

A

extensor hallucis longus

51
Q

ankle plantarflexion (ankle jerk) can be tested using what myotome?

A

S1

52
Q

what muscle is involved in the ankle jerk reflex?

A

gastrocnemius