Simplified Innervations

CN V3

Mastication Muscles (Masseter, Medial Pterygoid, Lateral Pterygoid, Temporalis)

CN XII (Hypoglossal)

Tongue Muscles

CN V, VII

Suprahyoid Muscles

Ansa Cervicalis

Infrahyoid Muscles

CN XI, C3-4

Sternocleidomastoid

Long Thoracic

Serratus Anterior

Suboccipital Nerve

Suboccipital Muscles

Phrenic Nerve

Diaphragm

Iliohypogastic, Ilioinguinal, and Thoracoabdominal Nerves

Abdominal Muscles

Pudenal Nerve

INNE: Pelvic Floor Muscles

Sensory: Skin of External Genitalia

CN XI, C3-4

Upper Trapezius

Ventral Rami of Lumbar Plexus (L1-L3)

Psoas Major

Femoral Nerve

Iliacus, Sartorius, Rectus Femoris, Vastus Medialis, Vastus Intermedius, Vastus Lateralis, Pectineus

Inferior Gluteal Nerve

Gluteus Maximus

Superior Gluteal Nerve

Gluteus Medius, Gluteus Minimus, Tensor Fascia Latae

Ventral Rami of Sacral Plexus

Piriformis, Gemelli, Quadratus Femoris, Obturator Internus

Obturator Nerve

INNE: Obturator Externus, Adductor Longus, Adductor Brevis, Gracilis, Pectineus, Adductor Magnus

Sensory: Skin Over Medial Thigh

Sciatic Nerve

INNE: Biceps Femoris (Long Head), Semitendinosus, Semimembranosus

Tibial Nerve

INNE: Gastrocnemius, Soleus, Plantaris, Popliteus, FHL, FDL, Tibialis Posterior

Arises From Sciatic Nerve

Anterior Femoral Cutaneous Nerve

Anterior and Lateral Thigh, Arises From Femoral Nerve

Posterior Femoral Cutaneous

Buttocks, Thigh, Popliteral Fossa

Common Peroneal Nerve

Arises From Sciatic Nerve, Divides into Deep Peroneal and Superficial Peroneal, Gives Rise to Lateral Sural Cutaneous

Superficial Peroneal

INNE: Peroneus Longus, Peroneus Brevis

SENSORY: Lateral Lower Leg & Dorsum of Foot

Deep Peroneal

INNE: Tibialis Anterior, EDL, EHL, Peroneus Tertius, EHB, EDB

Sensory: Web Space Between 1st and 2nd Toes

Medial Plantar

INNE: Abductor Hallucis, FDB, FHB, 1st Lumbrical

Lateral Plantar

Quadratus Plantae, Abductor Digiti Minimi, FDMB, Plantar Interossei, Dorsal Interossei, Lateral 3 Lumbricals, Adductor Hallucis

Saphenous Nerve

Sensory: Medial Ankle & Foot

Arises from Femoral Nerve

Sural Nerve

Sensory: Posterolateral Leg, Lateral Foot

Arises from Tibial and Common Peroneal Nerves

Dorsal Scapular

INNE: Rhomboids & Levator Scapula

Suprascapular Nerve

INNE: Supraspinatus & Infraspinatus

Nerve to Subclavius

INNE: Subclavius

Lateral Pectoral Nerve

INNE: Pectoralis Major & Pectoralis Minor

Musculocutaneous

INNE: Coracobrachialis, Biceps Brachii, Medial Portion of Brachialis

Gives Rise to Lateral Antebrachial Cutaneous Nerve

Medial Pectoral Nerve

INNE: Pectoralis Minor & Pectoralis Major

Medial Brachial Cutaneous Nerve

Skin on Medial Side of Arm

Medial Antebrachial Cutaneous Nerve

Skin on Medial Side of Forearm

Ulnar Nerve

INNE: FCU, Medial Portion of FDP, Hypothenal Muscles, Medial 2 Lumbricals (3&4), All Interossei, Adductor Pollicis, Deep Head of FPB

Sensory: Skin of Palmar and Dorsal Aspects of Medial 1/3 of Hand

Median Nerve

INNE: All Anterior Muscles of Forearm EXCEPT FCU and Medial Portion of FDP, Superficial Head of FPB, AbPB, OP, Lateral 2 Lumbricals (1&2)

Sensory: Skin of Lateral Side of Palm, Palmar side of Later 3 ½ Fingers, Dorsal Side of 2nd, 3rd, and ½ of 4th Fingers

Gives Rise to Anterior Interosseous Nerve

Upper Subscapular

Upper Potion of Subscapularis

Thoracodorsal

Latissimus Dorsi

Lower Subscapular

Lower Portion of Subscapularis and Teres Major

Axillary

INNE: Deltoid and Teres Minor

Gives Rise to Lateral Brachial Cutaneous Nerve

Radial Nerve

INNE: Triceps Brachii, Lateral Portion of Brachialis, Brachioradialis, ECRL

Gives Rise to Posterior Brachial Cutaneous and Posterior Antebrachial Cutaneous

Deep Radial

INNE: Supinator, ECRB, ED, EDM, ECU

Emerges Posteriorly as Posterior Interosseus

Posterior Interosseus

INNE: EI, AbdPL, EPL, EPB

Superficial Radial

Lateral Dorsal Aspect of Hand and Proximal Dorsal Aspect of Lateral 3 ½ Digits