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Medical Term:

spinalis thoracis (muscle)


Definition: origin, spinous processes of upper lumbar and two lower thoracic vertebrae; insertion, spinous processes of middle and upper thoracic vertebrae; action, supports and extends vertebral column; nerve supply, dorsal primary rami of thoracic and upper lumbar.

Synonym(s): musculus spinalis thoracisTA, musculus spinalis dorsi, spinal muscle of thorax

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