Dermatomes Flashcards
C1
vertex of skull.
C2
temple, forehead, occiput. myotome: longus colli, SCM, rectus capitis
C3
entire neck, posterior cheek, temporal area, prolongation forward under mandible. myotome: trap, splenius capitis
C4
shoulder area, clavicular and upper scap area. myotome: trap, levator scapulae
C5
deltoid area, anterior aspect of entire arm to base of thumb. myotome: supraspinatus, deltoid, biceps
C6
anterior arm, radial side of hand to thumb and index finger. myotome: biceps, supinator, wrist extensors.
C7
lateral arm and forearm to index, long and ring fingers. myotome: triceps, wrist flexors
C8
medial arm and forearm to long, ring and little fingers. myotome: ulnar deviators, thumb extensors, thumb adductors
T1
medial side of forearm to base of little finger.
T2
medial side of upper arm to medial elbow, pectoral and midscapular areas
T3-6
upper thorax
T5-7
cotal margin
T8-12
abs and lumbar region
L1
back, over trochanter and groin
L2
back, front of thigh to knee. myotome: psoas, hip adductors
L3
back, upper buttock, anterior thigh and knee, medial lower leg. myotome: psoas ,quads, thigh atrophy
L5
buttock, posterior and lateral thigh, lateral aspect of leg, dorsum of foot, medial half of sole, first second and third toes. myotome: extensor hallucis, peroneals, gluteus medius, dorsiflexors, hamstring and calf atrophy
S1
buttock, thigh and posterior leg. myotome: calf and hamstring, wasting of gluteals, peorneals, PFs
S2
same as S1. mytome: same as S1 except peroneals
S3
groin and medial thigh to knee.
S4
perineum, genitals, lower sacrum. myotome: bladder, rectum
L4
medial buttock, lateral thigh, medial leg, dorsum of foot, big toe. myotome: tib anterior, extensor hallicus
