Skip to Content

intrinsic muscles of back

 

Definition: muscles fully contained (origin, belly, and insertion) within and acting on the back; these muscles occur as the deepest of three groups of back muscles, the superficial and intermediate groups consisting of extrinsic muscles innervated by anterior rami of spinal nerves. The intrinsic back muscles, in turn, are organized into three layers: a superficial layer of splenius muscles, an intermediate layer of erector spinae muscles, and a deep layer of transversospinal muscles, all innervated by posterior rami of spinal nerves.

Disclaimer: This site is designed to offer information for general educational purposes only. The health information furnished on this site and the interactive responses are not intended to be professional advice and are not intended to replace personal consultation with a qualified physician, pharmacist, or other healthcare professional. You must always seek the advice of a professional for questions related to a disease, disease symptoms, and appropriate therapeutic treatments.
© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.
Hide