Back Flashcards by Ryan Hutten

Serratus posterior inferior attachments

Spinous processes of T11-L2

Inferior aspect of ribs 9-12

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Serratus posterior inferior innervation

Ventral rami of lower thoracic nerves

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Serratus posterior inferior blood supply

Posterior intercostal arteries

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Serratus posterior inferior action

Depresses ribs

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Serratus posterior superior attachments

Ligamentum nuchae, Spinous processes C7-T3

Superior aspect of ribs 2-4

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Serratus posterior superior innervation

Ventral rami of upper thoracic nerves

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Serratus posterior superior blood supply

Posterior intercostal arteries

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Serratus posterior superior action

Elevates ribs

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Splenius capitis attachments

Nuchal ligament, spinous processes C7-T3

Mastoid process of temporal bone, lateral thrid of superior nuchal line

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Splenius capitis innervation

Dorsal rami of middle cervical nerves

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Splenius capitis blood supply

Descending branch of occipital artery, deep cervical artery

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Splenius capitis action

Bilaterally extend head

Unilaterally same side lateral rotation

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Splenius cervicis attachments

Spinous processes T3-T6

Transverse processes C1-C3

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Splenius cervicis innervation

Dorsal rami of lower cervical nerves

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Splenius cervicis blood supply

Descending branch of occipital artery, deep cervical artery

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Splenius cervicis action

Bilaterally extend neck

Unilaterally lateral rotation of neck to same side

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Obliquus capitis inferior attachments

Spine of axis

Transverse process of atlas

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Obliquus capitis inferior innervation

Suboccipital nerve

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Obliquus capitis inferior blood supply

Vertebral artery, descending branch of occipital artery

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Obliquus capitis inferior action

Rotates atlas to turn face to same side

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Obliquus capitis superior attachments

Transverse process of atlas

Occipital bone

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Obliquus capitis superior innervation

Suboccipital nerve

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Obliquus capitis superior blood supply

Vertebral artery, descending branch of occipital artery

Obliquus capitis superior action

Extends and bends head laterally

Rectus capitis posterior major attachments

Spine of axis | Inferior nuchal line

Rectus capitis posterior major innervation

Suboccipital nerve

Rectus capitis posterior major blood supply

Vertebral artery, descending branch of the occipital artery

Rectus capitis posterior major action

Extends and rotates head to same side

Rectus capitis posterior minor attachments

Spine of atlas | Inferior nuchal line

Rectus capitis posterior minor innervation

Suboccipital nerve

Rectus capitis posterior minor blood supply

Vertebral artery, descending branch of occipital artery

Rectus capitis posterior minor action

Extends head

Latissimus dorsi attachments

Spinous processes T7-L5, Thoracolumbar fascia, iliac crest, and last 3 ribs Humerus intertuburcular sulcus

Latissimus dorsi innervation

Thoracodorsal nerve

Latissimus dorsi blood supply

Thoracodorsal artery, 9-11 posterior intercostal, subcostal and lumbar arteries 1-3

Latissimus dorsi action

Extends, adducts, and medial rotates humerus

Levator scapulae attachments

Posterior tubercles of C1-C4 transverse processes | Medial border of scapula from from superior angle to spine

Levator scapulae innervation

Ventral rami of C3-C4 and dorsal scapular nerve

Levator scapulae blood supply

Dorsal scapular artery, transverse cervical artery, ascending cervical artery

Levator scapulae action

Elevates scapula medially | Inferiorly rotates glenoid cavity

Rhomboid major attachments

T2-T5 spinous processes | Medial border of scapula below base of spine of scapula

Rhomboid major innervation

Dorsal scapular nerve

Rhomboid major blood supply

Dorsal scapular artery | Deep branch of transverse cervical artery

Rhomboid major action

Fixes scapula to thoracic wall and retracts and rotates it to depress the glenoid cavity

Rhomboid minor attachments

Ligamentum nuchae and spines of C7-T1 vertebrae | Medial border of scapula at spine

Rhomboid minor innervation

Dorsal scapular nerve

Rhomboid minor blood supply

Dorsal scapular artery | Deep branch of transverse cervical artery

Rhomboid minor action

Fixes scapula to thoracic wall and retracts and rotates it to depress the glenoid cavity

Trapezius attachments

Superior nuchal line, external occipital protuberance, nuchal ligament, spinous processes of C7–T12 Lateral third of clavicle, acromion, spine of scapula

Trapezius innervation

Accessory nerve (CN XI)

Trapezius blood supply

Transverse cervical artery, dorsal perforating branches of posterior intercostal arteries

Trapezius action

Elevates, retracts, and rotates scapula | Lower fibers detract scapula

Semispinalis attachments

Transverse processes C4-T12 | Spinous processes of cervical and thoracic regions

Semispinalis innervation

Dorsal rami of spinal nerves

Semispinalis blood supply

Cervical: occipital, deep cervical, and vertebral arteries Thoracic: dorsal branches of posterior intercostal arteries

Semispinalis action

Extends head neck and thorax and rotates them towards opposite side