myotomes and dermatomes of nerve root levels Flashcards
C1
dermatome: top of head
myotome: neck flexion
C2
dermatome: back of head
myotome: neck flexion
C3
dermatome: lateral neck
myotome: lateral neck flexion
C4
dermatome: top of shoulder
myotome: shoulder elevation
C5
dermatome: lateral upper arm
myotome:
deltoid- shoulder abduction
biceps- elbow flexion
reflex: biceps (bicep tendon)
C6
dermatome: lateral forearm, thumb and index finger
myotome:
elbow- flexion
wrist- extension
reflex: brachioradialis
C7
dermatome: middle finger
myotome:
elbow- extension
wrist- flexion
reflex: tricep
C8
dermatome: medial forearm, ring and little finger
myotome:
thumb extension
ulnar deviation
finger flexion & abduction
T1
dermatome: medial upper arm
myotome: finger- abduction/ adduction