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Back Muscle Innervations by Dr. Kumka

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rraigoza's version from 2015-10-09 01:03

Extrinsic Back Muscles

Question Answer
TrapeziusMotor Spinal Accessory n.(CN XI) Sensory (P&P) APR’s of C2, C3, C4
Latissimus DorsiThoracodorsal N (C6, C7, C8)
Levator ScapulaeDorsal Scap N (C4, C5) APR C3, C4
Rhomboid MinorDorsal Scap. N. C5
Rhomboid MajorDorsal Scap. N C5
Serratus Posterior SupperiorAPR’s T2-T5 (fr. Intercostal n)
Serratus Posterior Inferior APR’s T9-T12 (fr. Intercostal & subcostal n.
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Intrinsic Back Muscles

Question Answer
Splenius capitisPPR’s, lat branches C3- C5
Splenius cervicisPPR’s, lat branches C5- C7
IliocostalisLateral branches of PPR’s of nearby spinal nerves
LongissimusLateral & Medial branches of PPR’s of nearby spinal nerves
SpinalisMedial branches of PPR’s of nearby spinal nerves
SemispinalisMedial branches of PPR’s of nearby spinal nerves
MultifidusMedial branches of PPR’s of nearby spinal nerves
Rotatores Longus & BrevisMedial branches of PPR’s nearby spinal nerves
Levator Costarum (LC) Longus & BrevisLateral branches of PPR’s of nearby spinal nerves
InterspinalesMedial branches of PPR’s of nearby spinal nerves
IntertransversaraiiAPR & PPR’s of nearby spinal nerves
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Suboccipital Muscles

Question Answer
Rectus Capitus Posterior MinorMotor Suboccipital N (PPR C1) Pain and Proproception Greater Occipital N (PPR C2)
Rectus Capitus Posterior MajorMotor Suboccipital N (PPR C1) Pain and Proproception Greater Occipital N (PPR C2)
Obliquus Capitis Inferior (Inferior oblique of head)Motor Suboccipital N (PPR C1) Pain and Proproception Greater Occipital N (PPR C2)
Obliquus Capitis Superior (Superior oblique of head)Motor Suboccipital N (PPR C1) Pain and Proproception Greater Occipital N (PPR C2)
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