| C4 |
acromioclavicular joint |
diaphragm |
| C5 |
lateral antecubital fossa |
shoulder rotators/abductors; elbow flexor |
| C6 |
thumb |
supinators, pronators, wrist extensor |
| C7 |
middle finger |
elbow extensor, wrist flexor |
| C8 |
little finger |
finger flexors, distal phalanx |
| T1 |
medial antecubital fossa |
intrinsic hand muscles |
| L2 |
upper anterior thigh |
hip flexor |
| L3 |
medial femoral condyle |
knee extensor |
| L4 |
medial malleolus |
ankle dorsiflexor |
| L5 |
dorsum of foot |
toe extensors |
| S1 |
lateral heel |
plantar flexors |
| S2-5 |
peri-anal |
sphincter |
