| Front | Deep back muscles |
|---|---|
| Back | (Including erector spinae) Structure: found deep in the back adjacent to spinous processes, typically have longitudinal fiber direction Innervation: dorsal rami of spinal nerves Function: 1. Shortening contraction for extension, rotation, and lateral bending of vertebral column and head 2. Lengthening contraction of anti-gravity muscles to control flexion and lateral bending |
Tags: muscles
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