Spinal Cord Muscle Innervation

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Top Contributors - Lucinda hampton  

Introduction

Muscle Innervation

Upper Limb

Joint	Movement	Muscles	Innervation
			C3	C4	C5	C6	C7	C8	T1
Scapula	Elevation	Upper Trapezius	O	X
		Levator Scapula	O	O	O
	Depression	Lower Trapezius	O	X
	Retraction	Middle Trapezius	O	X
		Rhomboids		O	O
	Protraction	Serratus Anterior			X	O	O
Shoulder	Flexion	Anterior Deltoid			X	O
		Pectoralis Major (Clavicular Head)			X	O
		Pectoralis Major (Sternocostal Head)				O	X	O	O
		Corachobrachialis			O	O	O
	Extension	Posterior Deltoid			X	O
		Infraspinatus			X	O
		Teres Minor			X	O
		Teres Major			O	X	O
		Latissimus Dorsi				O	X	O
	Abduction	Middle Deltoid			X	O
		Supraspinatus			X	O
	Adduction	Pectoralis Major (Sternocostal Head)				O	X	O	O
		Latissimus Dorsi				O	X	O
		Corachobrachialis			O	O	O
	Horizontal Abduction	Posterior Deltoid			X	O
	Horizontal Adduction	Pectoralis Major (Clavicular Head)			X	O
		Pectoralis Minor			O	O	X	X	O
		Anterior Deltoid			X	O
	Internal Rotation	Subscapularis			O	X
		Teres Major			O	O	O
		Latissimus Dorsi				O	X	O
		Anterior Deltoid			X	O
	External Rotation	Infraspinatus			X	O
		Teres Minor			X	O
		Posterior Deltoid			X	O
Elbow	Flexion	Biceps Brachii			O	O
		Brachialis			O	X	O
		Brachioradialis			O	X
	Extension	Triceps				O	X	O
	Supination	Biceps Brachii			O	O
		Supinator				X	O
	Pronation	Pronator Quadratus					O	X
		Pronator Teres				O	X
Wrist	Flexion	Flexor Carpi Radialis				O	O
		Palmaris Longus					O	O
		Flexor Carpi Ulnaris					O	X	O
	Extension	Extensor Carpi Radialis Longus			O	X
		Extensor Carpi Radialis Brevis					X	O
		Extensor Carpi Ulnaris					X	O
	Radial Deviation	Extensor Carpi Radialis Longus			O	X
		Extensor Carpi Radialis Brevis					X	O
		Flexor Carpi Radialis				O	O
	Ulnar Deviation	Extensor Carpi Ulnaris					X	O
		Flexor Carpi Ulnaris					O	X	O
Fingers	Flexion (MCP/PIP)	Flexor Digitorum Superficialis					O	X	O
	Flexion (DIP)	Flexor Digitorum Profundus					O	X	O
		Dorsal Interossei						O	X
		Palmar Interossei						O
	Flexion (MCP)	Flexor Digiti Minimi Brevis						O	X
	Extension (MCP/PIP/DIP)	Extensor Digitorum					X	O
		Extensor Indicis					X	O
		Extensor Digiti Minimi					X	O
	Extension (PIP/DIP)	Lumbricals						O	X
	Abduction	Dorsal Interossei						O	X
		Abductor Digiti Minimi						O	X
	Adduction	Palmar Interossei						O	X
	Opposition	Opponens Digiti Minimi						O	X
Thumb	Flexion (IP)	Flexor Pollicis Longus					O	X
	Flexion / Rotation (MCP)	Flexor Pollicis Brevis						O	X
	Extension (MCP)	Extensor Pollicis Brevis					X	O
	Extension (IP)	Extensor Pollicis Longus					X	O
	Abduction	Abductor Pollicis Longus					X	O
	Abduction / Rotation	Abductor Pollicis Brevis						O	X
	Adduction / Rotation	Adductor Pollicis						O	X
	Adduction / Flexion (IP)	Palmar Interossei						O	X
	Opposition	Opponens Pollicis						O	X

Lower Limb

Joint	Movement	Muscles	Innervation
			L1	L2	L3	L4	L5	S1	S2	S3
Hip	Flexion	Psoas Major	X	X	O
		Iliacus		X	O
		Pectineus		X	O
		Rectus Femoris		O	X	X
		Adductor Longus		X	X	O
		Sartorius		O	O
	Extension	Gluteus Maximus					X	X	O
		Adductor Magnus		X	X	O
		Semimembranosus					O	X	O
		Semitendinosus					O	X	O
		Biceps Femoris					O	X	O
	Internal Rotation	Iliacus		X	O
		Gluteus Medius				X	X	O
		Gluteus Minimus				X	X	O
		Tensor Fascia Latae				X	X	O
	External Rotation	Superior Gemelli					O	O
		Inferior Gemelli					O	O
		Quadratus Femoris					O	O
		Piriformis					O	X	O
		Obturator Internus					O	X
		Obturator Externus			O	X
		Sartorius		O	O
	Adduction	Gracilis		X	O
		Adductor Longus		X	X	O
		Adductor Magnus		X	X	O
		Pectineus		X	O
	Abduction	Tensor Fascia Latae				X	X	O
		Gluteus Medius				X	X	O
		Gluteus Minimus				X	X	O
		Piriformis					O	X	O
Knee	Flexion	Semimembranosus					O	X	O
		Semitendinosus					O	X	O
		Biceps Femoris					O	X	O
		Gastrocnemius						O	O
	Extension	Rectus Femoris		O	X	X
		Vastus Lateralis		O	X	X
		Vastus Intermedius		O	X	X
		Vastus Medialis		O	X	X
Ankle	Dorsiflexion	Tibialis Anterior				X	O
		Extensor Digitorum Longus					X	O
		Extensor Hallucis Longus					X	O
		Peroneus Tertius					O	O
	Plantarflexion	Gastrocnemius						O	O
		Soleus						O	O
		Flexor Digitorum Longus					O	X	X
		Flexor Hallucis Longus					O	X	X
		Peroneus Longus					O	O
		Tibialis Posterior				O	O
	Inversion	Tibialis Anterior				X	O
		Tibialis Posterior				O	O
	Eversion	Peroneus Longus					O	O
		Peroneus Brevis					O	O
		Peroneus Tertius					O	O
Toes	Flexion	Flexor Digitorum Longus					O	X	X
		Flexor Hallucis Longus					O	X	X
		Flexor Hallucis Brevis						O	O
		Flexor Digitorum Brevis						O	O
		Flexor Digitorum Accessorius							O	O
		Flexor Digiti Minimi Brevis							O	O
		Abductor Hallucis						O	O
		Abductor Digiti Minimi							O	O
		Lumbricals						O	O	O
	Extension	Extensor Digitorum Longus					X	O
		Extensor Digitorum Brevis					O	O
		Extensor Hallucis Longus					X	O
	Abduction	Abductor Hallucis						O	O
		Abductor Digiti Minimi							O	O
		Dorsal Interossei							O	O
	Adduction	Plantar Interossei							O	O
		Adductor Hallucis							O	O

X - Main Nerves Innervating Muscle

O - Accessory Nerves Innervating Muscle

Resources

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