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Back Muscles PNWU

Anatomy Back Muscles - attachments, innervation and vasculature

QuestionAnswer
Trapezius T12 up to superior nuchal line and around to hit the clavical; Accessory Nerve (CN11); transverse cervical artery
Latissimus Dorsi medial lip of bicipital groove of humerus to spinous processes from T7 through the Sacrum; thoracodorsal nerve; thoracodorsal artery
Levator Scapulae from the transverse processes of C1 to C4 to the superior angle of the scapula; Dorsal Scapular Nerve; Dorsal Scapular Artery
Rhomboid Minor From the spinal process of C7 and T1 to medial scapular border; dorsal scapular nerve/atery
Rhomboid Major T2 to T5 to medial scapular border; dorsal scapular nerve/artery
Serratus Posterior Superior C7 through T3 to Ribs 2 through five; intercostal nerve; anterior intercostal artery
Serratus Posterior Inferior T11 through L3 to Ribs 9 through 12; intercostal nerve; anterior intercostal artery
Spinotransversales Muscles Splenius Capitis/Cervicis
Splenus Capitis Spinous processes of thoracocervical region to mastoid process and skull
Splenius Cervicis Spinous processes in thoracic regions to transverse process of the first few cervicle vertebra
Errector Spinae Muscles Iliocostalis, longissimus, spinalis; span 6 - 10 vertebrae
Iliocostalis lumborum, thoracis, cervicis; from sacrum/illium to the angles of the ribs (to rib 2) to transverse process C4
Longissimus thoracis, cervicis, capitis; from sacrum to the mastoid process; connects the transverse processes
Spinalis thoracis, cervicis, capitis; connects the spinous processes together
Transversospinales Muscles Semispinalis, multifidus, rotatores; from transverse process of one to spinous process of another above
Semispinalis thoracis, cervicis, capitis (thickest muscle in neck); from thoracis region to occipital bone; skip 4-6 vertebrae at a time
Multifidus Span 2-4 vertebrae
Rotatores Span 1-2 vertebrae
Segmental Muscles Levatores Costarum; Interspinales; Transversarii
Levatores Costarum From transverse process to tubercle of rib below from C7 to T11
Interspinales Pass between spinous processes
Intertransversarii between transverse processes
Suboccipital Muscles Rectus Capitis Posterior Major; Rectus Capitis Posterior Minor; Obliquus Capitis Superior; Obliquus Capitis Inferior
Rectus Capitis Posterior Major From C2 to below the inferior Nuchal Line (lateral)
Rectus Capitis Posterior Minor From C1 to below the inferior Nuchal Line (medial)
Obliquus Capitis Superior From the transverse process of C1 to between the Nuchal Lines
Obliquus Capitis Inferior From the spinous process of C2 to the transverse process of C1
Innervation of deep back muscles dorsal rami of spinal nerves
blood supply of deep back dormsal branch of intercostal arteries
what's in the suboccipital triangle vertebral artery and the suboccipital nerve (aka dorsal ramus of C1)
Greater Occipital nerve dorsal ramus of C2
Thoracolumbar Fascia serves as an attachment point and compartmentalization
Created by: pjohansing on 2011-08-20



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