dermatome- C1
vertex of skull
dermatome- C2
temple, forehead, occiput
dermatome- C3
entire neck, posterior cheek, temporal area, prolongation forward under mandible
dermatome- C4
shoulder area, clavicular area, upper scapular area
dermatome- C5
deltoid area, anterior aspect of entire arm to base of thumb
dermatome- C6
Anterior arm, radial side of hand to thumb and index finger
dermatome- C7
Lateral arm and forearm to index, long, and ring finger
dermatome- C8
medial arm and forearm to index, long, and ring fingers
dermatome-T1
medial side of forearm to base of little finger
dermatome- T2
medial side od upper arm to medial elbow, pectoral and midscapular areas
dermatome- T3-T12
T3-T6 upper thoraxT5-T7 costal marginT8-T12 abdomen and lumbar region
dermatome- L1
back, over trochanter and groin
dermatome- L2
back, front of thigh to knee
dermatome- L3
back, upper buttock, anterior thigh and knee, medial lower leg
dermatome- L4
Medial buttock, lateral thigh, medial leg, dorsum of foot, big toe
myotome- C1
none
myotome- C2
longus colli, sternocleidomastoid, rectus capitis
myotome- C3
Trapezius, splenius capitis
myotome- C4
Trapezius, levator scapulae
myotome- C5
supraspinatus, infraspinatus, deltoid, biceps
myotome- C6
biceps, supinator, wrist extensors
myotome-C7
triceps, wrist flexor
myotome- C8
Ulnar deviators, thumb extensors, thumb adductors
myotome- T1-T2
disk lesions at upper two thoracic levels and intrinsic muscles
myotome- T3-T12
weakness not detectable
myotome- L1
none
myotome- L2
psoas, hip adductors
myotome- L3
psoas, quadricps, thigh atrophy
myotome- L4
Tibialis anterior, extensor hallucis
dermatome- L5
buttock, posterior and lateral thigh, lateral aspect of leg, dorsum of foot, medial half of sole, first, second, and third toes
dermatome- S1
buttock, thigh, and leg posterior
dermatome- S2
buttock, thigh, and leg posterior
dermatome- S3
groin, medial thigh to knee
dermatome- S4
perineum, genitals, lower sacrum
myotome- L5
extensor hallucis, peroneals, gluteus medius, dorsiflexors, hamstring and calf atrophy
myotome- S1
calf and hamstrings, wasting of gluteals, peroneals, plantar flexors
myotome- S2
calf and hamstrings, wasting of gluteals, plantar flexors
myotome- S3
none
myotome- S4
bladder, rectum