| Innervation Level |
Resistive Test |
Dermatome |
| C1 |
Cervical Rotation |
N/A |
| C2 |
Shoulder Elevation |
Posterior Head |
| C3 |
Shoulder Elevation |
Posterior-lateral neck |
| C4 |
Shoulder Elevation |
AC joint |
| C5 |
Shoulder Abduction & Elbow Flexion |
Lateral Arm |
| C6 |
Elbow Flexion & Wrist Extension |
Lateral Forearm & Thumb |
| C7 |
Elbow Extension & Wrist Flexion |
Middle Finger-Palmar Distal Phalanx |
| C8 |
Thumb Extension |
Pinky & Ulnar Border of the Hand |
| T1 |
Finger Adduction |
Medial Forearm |
| L1 |
Hip Flexion |
N/A |
| L2 |
Hip Flexion |
Anterior Thigh |
| L3 |
Knee Extension |
Middle Third of Anterior Thigh |
| L4 |
Knee Extension & Ankle Dorsiflexion |
Patella & Medial Malleolus |
| L5 |
Ankle Dorsiflexion & Great Toe Extension |
Fibular Head & Dorsum of Foot |
| S1 |
Ankle Plantar Flexion |
Lateral & Plantar Aspect of Foot |
| S2 |
N/A |
Medial Aspect of Posterior Thigh |
Poultry
