Term
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Definition
| Arises by a broad tendon from posterior part of iliac crest, posterior surface of sarum, sacral and inferior lumbar spinous processes, and suprspinous ligament |
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Term
| Insertion of Erector Spinae |
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Definition
Iliocostalis: lumborum, thoracis, and cervicis- fibers run superiorly to angles of lower ribs and cervical transvers processes
Longissimus: thoracis, cervicis, and capitis- fibers run superiorly to ribs between tubercles and angles, to transverse processes in thoracic and cervical regions, and to mastoid process of temporal lobe
Spinais: thoracis, cervicis, and capitis- fibers run superomedially to occipital bone ans spinous processes in the upper thoracic region and to skull |
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Term
| Innervation of Erector Spinae |
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Definition
| Dorsal rami of spinal nerves |
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Term
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Definition
Acting bilaterally, they extend vertebral column and head; as back is flexed they control movement by gradually lengthening their fibers
Acting unilaterally, they laterally bend vertebral column |
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Term
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Definition
| Arises from transverse processes of C4-T12 vertebrae |
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Term
| Insertion of Semispinalis |
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Definition
| Thoracis, cervicis and capitis: fibers run superomedially to occipital bone and spinous processes in thoracic and cervical regions |
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Term
| Innervation of Semispinalis |
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Definition
| Dorsal rami of spinal nerves |
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Term
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Definition
| Extend head and thoracic and cervical regions of vertebral column and rotate them countralaterally |
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Term
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Definition
| Arises from sacrum and illium, transverse processes of T1-T3, and articular processes of C4-C7 |
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Term
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Definition
| Fibers pass superomedially to spinous processes of vertebrae above, spanning 2-4 segments |
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Term
| Innervation of Multifidis |
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Definition
| Dorsal rami of spinal nerves |
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Term
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Definition
| Stabilizes vertebrae during local movements of vertebral column |
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Term
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Definition
| Arise from transverse processes of vertebrae; are best developed in the thoracic region |
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Term
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Definition
| Pass superomedially to attach to junction of lamina and transverse process, or spinous process, of vertebrae above their origin, spanning 1-2 segments |
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Term
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Definition
| Dorsal rami of spinal nerves |
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Term
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Definition
| Stabilize vertebrae and assist with local extension and rotary movements of vertebral column; may function as organs of proprioception |
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Term
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Definition
| Superior surfaces of spinous processes of cervical and lumbar vertebrae |
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Term
| Insertion of Interspinales |
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Definition
| Inferior surface of spinous processes of vertebrae superior to vertbrae of origin |
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Term
| Innervation of Interspinales |
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Definition
| Dorsal rami of spinal nerves |
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Term
|
Definition
| Aid in extension and rotation of vertebral column |
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Term
| Origin of Intertransversarii |
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Definition
| Transverse processes of cervical and lumbar vertebrae |
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Term
| Insertion of Intertransversarii |
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Definition
| Transverse processes of adjacent vertebrae |
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Term
| Innervation of Intertransversarii |
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Definition
| Dorsal and ventral rami of spinal nerves |
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Term
| Action of Intertransversarii |
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Definition
| Aid in lateral bending of vertebral column; acting bilaterally, they stabilize vertebral column |
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