Back Muscle Innervation

CN XI (Spinal Accessory)

Trapezius

Thoracodorsal nerve

Latissimus dorsi

Dorsal Scapular nerve

Levator scapulae

Dorsal Scapular nerve

Rhomboid minor

Dorsal Scapular nerve

Rhomboid major

Intercostal nerves 2-5

Serratus Posterior Superior

Anterior rami to T 9-12 thoracic spinal nerves

Serratus Posterior Inferior

Dorsal primary rami of spinal nerves

Iliocostalis lumborum

Dorsal primary rami of spinal nerves

Iliocostalis thoracis

Dorsal primary rami of spinal nerves

Ilocostalis cervicis

Dorsal primary rami of spinal nerves

Longissimus thoracis

Dorsal primary rami of spinal nerves

Longissimus cervicis

Dorsal primary rami of spinal nerves

Longissimus capitis

Dorsal primary rami of spinal nerves

Spinalis

Dorsal primary rami of spinal nerves

Splenius capitis

Dorsal primary rami of spinal nerves

Splenius cervicis

Dorsal primary rami of spinal nerves

Semispinalis capitis

Dorsal primary rami of spinal nerves

Semispinalis cervicis

Dorsal primary rami of spinal nerves

Multifidus

Dorsal primary rami of spinal nerves

Rotators

Dorsal ramus C1

Obliquus capitis inferior

Dorsal Ramus C1

Obliquus capitis superior

Dorsal Ramus C1

Rectus capitis posterior minor

Dorsal Ramus C1

Rectus capitis posterior major

Dorsal rami of spinal nerves

Interspinales

Dorsal rami of spinal nerves

Intertransversarii

Axillary nerve

Deltoid

Long Thoracic Nerve

Serratus Anterior

Medial Pectoral Nerve

Pectoralis Minor

Medial and Lateral Pectoral Nerve

Pectoralis Major