Dermatomes/Cranial Nerves Flashcards
Location of paresthesia of C3
cheek, side of neck
Location of paresthesia of C4
horizontal band along clavicle and upper scapula
Location of paresthesia of C5
none
Location of paresthesia of C6
thumb and index finger
Location of paresthesia of C7
index, long and ring fingers
Location of paresthesia of C8
little finger alone or with two adjacent fingers; not ring or long fingers
Myotome C2
longus colli
SCM
rectus capitis
Myotome C3
Trap
splenius
capitis
Myotome C4
trap
levator
Myotome C5
supraspinatus
infraspinatus
delt
biceps
Myotome C6
biceps
supinator
wrist extensors
Myotome C7
triceps
wrist flexors
Myotome C8
ulnar deviators
thumb extensors
finger flexors
Disc lesions of upper two thoracic levels to not appear to give rise to …..
Weakness of intrinsic muscles of hand is due to ….
root weakness
other pathology (TOS, neoplasm of lung, ulnar nerve lesion)
Dermatome of T3-T6
upper thorax
Dermatome of T5-T7
costal margin
Dermatome of T8-T12
abdomen and lumbar region
Articular and dural signs and root pain are common in…
Root signs….
Root signs are rare and have such indefinite area that they…
Weakness is not…
T3-T12
cutaneious analgesia
have little localizing value
detectable
Location of paresthesia in L1
groin; after holding posture which causes pain
Location of paresthesia in L2
occasionally anterior thigh
Location of paresthesia in L3
medial knee, anterior lower leg
Location of paresthesia in L4
medial aspect of calf and ankle
Location of paresthesia in L5
lateral aspect of leg and medial three toes
Location of paresthesia in S1
lateral two toes, lateral foot, lateral leg to knee, plantar aspect of foot
Location of paresthesia in S2
lateral leg, knee and heel
Location of paresthesia in S3
none
Location of paresthesia in S4
saddle area, genitals, anus, impotence, massive posterior herniation
Myotome L2
psoas, hip adductors