Upper Myotomes
Lower Dermatomes
Brachial Plexus
Lower Myotomes
Upper Dermatomes
100

C1 & C2

Neck Flexion

100

L3

Medial Aspect of knee

100

Roots of the brachial plexus

C5-T1

100

L4

Ankle Dorsiflexion

100

C4

Clavicle

200

Elbow Flexion & Wrist Extension

C6

200

S2

Heel of foot

200

The musculocutaneous nerve innervates what muscle(s)

coracobrachialis, biceps brachii, and brachialis

200

Hip Flexion

L1 & L2

200

Lateral aspect of neck

C3

300

C4

Shoulder Elevation

300

Anteromedial aspect of thigh

L2

300

The 2 cords more anterior to the posterior cord

Lateral & medial cords

300

S1

Ankle plantarflexion

300

C7

Dorsal aspect of 3rd finger

400

Ulnar Deviation & Thumb Extension

C8

400

S1

Lateral aspect of 5th metatarsal

400

The serratus anterior is innervated by what nerve

The long thoracic nerve

400

Knee extension

L3

400

Lateral aspect of deltoid

C5

500

Finger ABD & ADD

T1

500

Dorsum of 2nd to 5th toes

L5

500

This nerve arises from the connection of the lateral and medial cords

The median nerve
500

S2

Knee flexion

500

C2

External occipital protuberance

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