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
Level Function
Cl-C6 Neck flexors
Cl-T1 Neck extensors
C3, C4, C5 Supply diaphragm
C5, C6 Shoulder movement, raise arm (deltoid); flexion of elbow (biceps); C6
externally rotates the arm (supinates)
C6, C7, C8 Extends elbow and wrist (triceps and wrist extensors); pronates wrist
C7, C8, Tl Flexes wrist
C8, Tl Supply small muscles of the hand
Tl -T6 lntercostals and trunk above the waist
T7-Ll Abdominal muscles
Ll, L2, L3, L4 Thigh flexion
L2, L3, L4 Thigh adduction
L4, L5, S1 Thigh abduction
L5, S1 S2 Extension of leg at the hip (gluteus maximus)
L2, L3, L4 Extension of leg at the knee (quadriceps femoris)
L4, L5, S1, S2 Flexion of leg at the knee (hamstrings)
L4, L5, S1 Dorsiflexion of foot (tibialis anterior)
L4, L5, S1 Extension of toes
L5, S1, S2 Plantar flexion of foot
L5, S1, S2 Nexion of toes

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