myotomes and dermatomes of nerve root levels Flashcards

1
Q

C1

A

dermatome: top of head

myotome: neck flexion

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2
Q

C2

A

dermatome: back of head

myotome: neck flexion

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3
Q

C3

A

dermatome: lateral neck

myotome: lateral neck flexion

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4
Q

C4

A

dermatome: top of shoulder

myotome: shoulder elevation

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5
Q

C5

A

dermatome: lateral upper arm

myotome:
deltoid- shoulder abduction
biceps- elbow flexion

reflex: biceps (bicep tendon)

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6
Q

C6

A

dermatome: lateral forearm, thumb and index finger

myotome:
elbow- flexion
wrist- extension

reflex: brachioradialis

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7
Q

C7

A

dermatome: middle finger

myotome:
elbow- extension
wrist- flexion

reflex: tricep

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8
Q

C8

A

dermatome: medial forearm, ring and little finger

myotome:
thumb extension
ulnar deviation
finger flexion & abduction

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9
Q

T1

A

dermatome: medial upper arm

myotome: finger- abduction/ adduction

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