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Myotomes/dermatomes

QuestionAnswer
Dermatomes Area of skin that is supplied by a single spinal nerve
Myotomes A group of muscles supplied by a single nerve root
Myotome C5 Shoulder abduction and external rotation; elbow flexion
Myotome C6 Wrist extension
Myotome C7 Elbow extensors and wrist flexion
Mytome C8 Thumb extension and finger flexion
Myotome T1 Finger abduction
Myotome L1/L2 Hip flexion
Myotome L3 Knee extension
Myotome L4/L5 Great toe extension
Myotome S1 Ankle and plantar flexion
Myotome S4 Bladder and rectum motor supply
Dermatome C2 Lower jaw, back of the head
Dermatome C3 Upper neck, back of the head
Dermatome C4 Lower neck, upper shoulders
Dermatome C6 Collarbones, upper shoulders
Dermatome C7 Upper back, back of arm, pointer and middle finger
Dermatome C8 Upper back, inside of arm, ring and little finger
Dermatome T1 Upper chest and back, armpit, front of arm
Dermatome T2/T3 Upper chest and back,
Dermatome T4 Upper chest (nipple area) and back
Dermatome T5/T6/T7 Mid chest and back
Dermatome T8/T9 Upper abdomen and mid back
Dermatome T10 Abdomen (area of belly button) and mid back
Dermatome T11 Abdomen and mid back
Dermatome T12 Lower abdomen and mid back
Dematome L1 Low back, hips groin
Dermatome L2/L3 Low back, front and inside thigh
Dermatome L4 Low back, front of thing and calf, knee, inside ankle
Dermatome L5 Low back, front and outside calf, top and bottom of foot, first four toes
Dermatome S1 Low back, back of thigh, back and inside of calf, last toe
Dermatome S2 Butt, genitals, back of thigh and calf
Dermatome S3 Butt, genitals
Dermatome S4/S5 Butt
Created by: opaltafe
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