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spi·na·lis (mus·cle)

the medial component of the erector spinae muscle; it is composed of the spinalis capitis, spinalis cervicis, and spinalis thoracis muscles.
Synonym(s): musculus spinalis [TA], spinal muscle


1. Relating to any spine or spinous process.
2. Relating to the vertebral column.
[L. spinalis]


(spī-nā′lĭs) [L.]
A muscle attached to the spinal process of a vertebra.