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rectus abdominis (muscle)

 

Definition: muscle of ventral abdominal wall, flanking the linea alba, and characterized by tendinous intersections separating its length into multiple bellies; origin, crest and symphysis of the pubis; insertion, xiphoid process and fifth to seventh costal cartilages; action, flexes lumbar vertebral column, draws thorax downward toward pubis; nerve supply, thoracoabdominal nerves.

Synonym(s): musculus rectus abdominisTA, rectus muscle of abdomen

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