| Segmental Spinal Cord Level and Function |
|---|
| Level | Function |
|---|
| C1-C6 | Neck flexors |
|---|
| C1-T1 | Neck extensors |
|---|
| C3,C4,C5 | Supply diaphragm (mostly C4) |
|---|
| C5,C6 | Shoulder movement, raise arm (deltoid); flexion of elbow (biceps); C6 externally rotates the arm (supinates) |
|---|
| C6,C7 | Extends elbow and wrist (triceps and wrist extensors); pronates wrist |
|---|
| C7,T1 | Flexes wrist |
|---|
| C7,T1 | Supply small muscles of the hand |
|---|
| T1-T6 | Intercostals and trunk above the waist |
|---|
| T7-L1 | Abdominal muscles |
|---|
| L1,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 | Flexion of toes |
|---|
