| Level
|
Motor function
|
| C1–C6
|
Neck flexors
|
| C1–T1
|
Neck extensors
|
| C3, C4, C5
|
Supply diaphragm (mostly C4)
|
| C5, C6
|
Move shoulder, raise arm (deltoid); flex elbow (biceps)
|
| C6
|
externally rotate (supinate) the arm
|
| C6, C7
|
Extend elbow and wrist (triceps and wrist extensors); pronate wrist
|
| C7, C8
|
Flex wrist; supply small muscles of the hand
|
| T1–T6
|
Intercostals and trunk above the waist
|
| T7–L1
|
Abdominal muscles
|
| L1–L4
|
Flex hip joint
|
| L2, L3, L4
|
Adduct thigh; Extend leg at the knee (quadriceps femoris)
|
| L4, L5, S1
|
abduct thigh; Flex leg at the knee (hamstrings); Dorsiflex foot (tibialis anterior); Extend toes
|
| L5, S1, S2
|
Extend leg at the hip (gluteus maximus); flex foot and flex toes
|
Template documentation