Descrição

Origin: Spinous process

Insertion: Spinous process

Nerve: Posterior rami of spinal nerves

Action: Extension, flexion and rotation of vertebral column.

Description:
In the lumbar region, intespinales muscles are four pairs in the intervals between the five lumbar vertebrae. There is also occasionally one between the last thoracic and first lumbar, and one between the fifth lumbar and the sacrum.


This definition incorporates text from a public domain edition of Gray's Anatomy (20th U.S. edition of Gray's Anatomy of the Human Body, published in 1918 – from http://www.bartleby.com/107/).

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