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| முள்ளந்தண்டு எலும்புகளின் அமைவிடமும் தொழிலும்
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| அமைவிடம்
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தொழில்
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| C1-C6
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Neck flexors
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| C1-T1
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Neck extensors
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| C3, C4, C5
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Supply diaphragm (mostly C4)
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| C5, C6
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Shoulder movement, raise arm (deltoid); flexion of elbow (biceps); C6 externally rotates the arm (supinates)
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| C6, C7
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Extends elbow and wrist (triceps and wrist extensors); pronates wrist
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| C7, T1
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Flexes wrist
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| C7, T1
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Supply small muscles of the hand
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| T1 -T6
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Intercostals and trunk above the waist
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| T7-L1
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Abdominal muscles
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| L1, L2, L3, L4
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Thigh flexion
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| L2, L3, L4
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Thigh adduction
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| L4, L5, S1
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Thigh abduction
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| L5, S1, S2
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Extension of leg at the hip (gluteus maximus)
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| L2, L3, L4
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Extension of leg at the knee (quadriceps femoris)
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| L4, L5, S1, S2
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Flexion of leg at the knee (hamstrings)
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| L4, L5, S1
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Dorsiflexion of foot (tibialis anterior)
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| L4, L5, S1
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Extension of toes
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| L5, S1, S2
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Plantar flexion of foot
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| L5, S1, S2
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Flexion of toes
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