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Spinal Segment Distr

Spinal segmental motor, movement, relfex, and sensory distributions

SegmentMotorMovementReflexSensory
C7 Wrist flexors, triceps Wrist flexion, elbow extension Triceps tendon Index, middle, and ring
C8 Thenar muscles Thumb extension Ulnar border of hand
Ti Interossei Abduction & adduction of fingers Medial arm
L2 Iliopsoas Hip flexion Anterolateral thigh
L3 Iliopsoas, quadriceps Hip flexion, knee extension Patellar tendon Anteromedial & distal thigh
L4 Tibialis anterior Ankle dorsiflexion Patellar tendon Medial calf and ankle
L5 Extensor hallicus longus Toe extension Lateral leg, anterior shin, and foot
S1 Fibularis longus/brevis Plantar flexion & eversion Achilles tendon Lateral ankle and foot
S2 Hamstrings Knee flexion Medial posterior thigh
C4 Upper traps Shoulder shrug Upper trap, lower neck
C5 Deltoid, biceps Shoulder abduction, elbow flexion Biceps tendon Deltoid area
C6 Wrist extensors, biceps Wrist extension, elbow flexion Brachioradialis tendon Radial border of hand
Created by: jvlassov