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Back Muscles OIAIA
Back Muscles Origin, Insertion, Action, Innervation, Artery
Question | Answer |
---|---|
Erector spinae Origin | iliac crest, sacrum, transverse and spinous processes of vertebrae and supraspinal ligament |
Erector spinae Insertion | angles of the ribs, transverse and spinous processes of vertebrae, posterior aspect of the skull |
Erector spinae Action | extends and laterally bends the trunk, neck and head |
Erector spinae Innervation | segmentally innervated by dorsal primary rami of spinal nerves C1-S5 |
Erector spinae Artery | supplied segmentally by: deep cervical a., posterior intercostal aa., subcostal aa., lumbar aa. |
Iliocostalis Origin | iliac crest and sacrum |
Iliocostalis Insertion | angles of the ribs |
Iliocostalis Action | extends and laterally bends the trunk and neck |
Iliocostalis Innervation | dorsal primary rami of spinal nerves C4-S5 |
Iliocostalis Artery | supplied segmentally by: deep cervical a., posterior intercostal aa., subcostal aa., lumbar aa. |
Interspinales Origin | upper border of spinous process |
Interspinales Insertion | lower border of spinous process above |
Interspinales Action | extend trunk and neck |
Interspinales Innervation | dorsal primary rami of spinal nerves C1-L5 |
Interspinales Artery | supplied segmentally by: deep cervical a., posterior intercostal aa., subcostal aa., lumbar aa. |
Intertransversarii Origin | upper border of transverse process |
Intertransversarii Insertion | lower border of transverse process above |
Intertransversarii Action | laterally bend trunk and neck |
Intertransversarii Innervation | dorsal primary rami of spinal nerves C1-L5 |
Intertransversarii Artery | supplied segmentally by: deep cervical a., posterior intercostal aa., subcostal aa., lumbar aa. |
Longissimus Origin | transverse process at inferior vertebral levels |
Longissimus Insertion | transverse process at superior vertebral levels and mastoid process |
Longissimus Action | extends and laterally bends the trunk, neck and head |
Longissimus Innervation | dorsal primary rami of spinal nerves C1-S1 |
Longissimus Artery | supplied segmentally by: deep cervical a., posterior intercostal aa., subcostal aa., lumbar aa. |
Multifidus Origin | sacrum, transverse processes of C3-L5 |
Multifidus Insertion | spinous processes 2-4 vertebral levels superior to their origin |
Multifidus Action | extend and laterally bend trunk and neck, rotate to opposite side |
Multifidus Innervation | dorsal primary rami of spinal nerves C1-L5 |
Multifidus Artery | supplied segmentally by: deep cervical a., posterior intercostal aa., subcostal aa., lumbar aa. |
Muscles of the Tranversospinal Group | semispinalis, multifidus and rotators |
Obliquus capitis inferior Origin | spinous process of the axis |
Obliquus capitis inferior Insertion | transverse process of atlas |
Obliquus capitis inferior Action | rotates the head to the same side |
Obliquus capitis inferior Innervation | suboccipital nerve (DPR of C1) |
Obliquus capitis inferior Artery | occipital a. |
Obliquus capitis superior Origin | transverse process of atlas |
Obliquus capitis superior Insertion | occipital bone above inferior nuchal line |
Obliquus capitis superiorAction | extends the head, rotates the head to the same side |
Obliquus capitis superior Innervation | suboccipital nerve (DPR of C1) |
Obliquus capitis superior Artery | occipital a |
Suboccipital Triangle is formed by? | the suboccipital triangle is formed by obliquus capitis superior and inferior and rectus capitis posterior major |
Rectus capitis posterior major Origin | spinous process of axis |
Rectus capitis posterior major Insertion | inferior nuchal line |
Rectus capitis posterior major Action | extends the head, rotate to same side |
Rectus capitis posterior major Innervation | suboccipital nerve (DPR of C1) |
Rectus capitis posterior major Artery | occipital a |
Rectus capitis posterior minor Origin | posterior tubercle of atlas |
Rectus capitis posterior minor Insertion | inferior nuchal line medially |
Rectus capitis posterior minor Action | extends the head |
Rectus capitis posterior minor Innervation | suboccipital nerve (DPR of C1) |
Rectus capitis posterior minor Artery | occipital a. |
What is the location relationship between the Rectus capitis muscles? | rectus capitis posterior minor is deeper and inserts more medial than rectus capitis posterior major |
Rotatores Origin | transverse processes |
Rotatores Insertion | long rotatores: spines 2 vertebrae above origin; short rotatores: spines 1 vertebrae above origin |
Rotatores Action | rotates the vertebral column to the opposite side |
Rotatores Innervation | dorsal primary rami of spinal nerves C1-L5 |
Rotatores Artery | supplied segmentally by: deep cervical a., posterior intercostal aa., subcostal aa., lumbar aa. |
Semispinalis Origin | transverse processes of C7-T12 |
Semispinalis Insertion | capitis: back of skull between nuchal lines; cervicis & thoracis: spines 4-6 vertebrae above origin |
Semispinalis Action | extends the trunk and laterally bends the trunk, rotates the trunk to the opposite side |
Semispinalis Innervation | dorsal primary rami of spinal nerves C1-T12 |
Semispinalis Artery | supplied segmentally by: deep cervical a., posterior intercostal aa., subcostal aa., lumbar aa. |
Serratus posterior inferior Origin | thoracolumbar fascia, spines of vertebrae T11-T12 and L1-L2 |
Serratus posterior inferior Insertion | ribs 9-12, lateral to the angles |
Serratus posterior inferior Action | pulls down lower ribs |
Serratus posterior inferior Innervation | branches of the ventral primary rami of spinal nerves T9-T12 |
Serratus posterior inferior Artery | lowest posterior intercostal a., subcostal a., first two lumbar aa. |
Serratus posterior superior Origin | ligamentum nuchae, spines of vertebrae C7 and T1-T3 |
Serratus posterior superior Insertion | ribs 1-4, lateral to the angles |
Serratus posterior superior Action | elevates the upper ribs |
Serratus posterior superior Innervation | branches of the ventral primary rami of spinal nerves T1-T4 |
Serratus posterior superior Artery | posterior intercostal aa. 1-4 |
Spinalis Origin | spinous processes at inferior vertebral levels |
Spinalis Insertion | spinous processes at superior vertebral levels and base of the skull |
Spinalis Action | extends and laterally bends trunk and neck |
Spinalis Innervation | dorsal primary rami of spinal nerves C2-L3 |
Spinalis Artery | supplied segmentally by: deep cervical a., posterior intercostal aa., subcostal aa., lumbar aa. |
Splenius capitis Origin | ligamentum nuchae and spines of C7-T6 vertebrae |
Splenius capitis Insertion | mastoid process and lateral end of the superior nuchal line |
Splenius capitis Action | extends and laterally bends the neck and head, rotates head to the same side |
Splenius capitis Innervation | dorsal primary rami of spinal nerves C2-C6 |
Splenius capitis Artery | supplied segmentally by: deep cervical a., posterior intercostal aa. |
Splenius cervicis Origin | ligamentum nuchae and spines of C7-T6 vertebrae |
Splenius cervicis Insertion | posterior tubercles of the transverse processes of C1-C3 vertebrae |
Splenius cervicis Action | extends and laterally bends neck and head, rotates head to the same side |
Splenius cervicis Innervation | dorsal primary rami of spinal nerves C2-C6 |
Splenius cervicis Artery | supplied segmentally by: deep cervical a., posterior intercostal aa. |