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Spectrum Library

Map of Spinal Column

Color coded map of spinal cord at resource.? Below is a list of cord segments and associated functions.

Segmental Spinal Cord Level and Function
LevelFunction
Cl-C6Neck flexors
Cl-T1Neck extensors
C3, C4, C5Supply diaphragm
C5, C6Shoulder movement, raise arm (deltoid); flexion of elbow (biceps); C6
externally rotates the arm (supinates)
C6, C7, C8Extends elbow and wrist (triceps and wrist extensors); pronates wrist
C7, C8, TlFlexes wrist
C8, TlSupply small muscles of the hand
Tl -T6lntercostals and trunk above the waist
T7-LlAbdominal muscles
Ll, L2, L3, L4Thigh flexion
L2, L3, L4Thigh adduction
L4, L5, S1Thigh abduction
L5, S1 S2Extension of leg at the hip (gluteus maximus)
L2, L3, L4Extension of leg at the knee (quadriceps femoris)
L4, L5, S1, S2Flexion of leg at the knee (hamstrings)
L4, L5, S1Dorsiflexion of foot (tibialis anterior)
L4, L5, S1Extension of toes
L5, S1, S2Plantar flexion of foot
L5, S1, S2Nexion of toes

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