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serratus posterior inferior (muscle)

 

Definition: lower intermediate muscle of back; origin, with latissimus dorsi, from spinous processes of two lower thoracic and two upper lumbar vertebrae; insertion, into lower borders of last four ribs; action, draws lower ribs backward and downward; nerve supply, ninth to twelfth intercostal.

Synonym(s): musculus serratus posterior inferiorTA, inferior posterior serratus muscle

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© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.
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