external oblique muscle

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Related to musculus obliquus externus abdominis: musculus obliquus internus abdominis

ex·ter·nal ob·lique mus·cle

(eks-tĕr'năl ō-blēk' mŭs'ĕl)
Origin, fifth to twelfth ribs; insertion, anterior half of lateral lip of iliac crest, inguinal ligament, and anterior layer of the rectus sheath; action, diminishes capacity of abdomen, draws thorax downward; nerve supply, thoracoabdominal nerves.
Synonym(s): musculus obliquus externus abdominis [TA] .
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

external oblique muscle

Abdominal wall muscle. Origin: lower costal margin. Insertion: anterior half of iliac crest, rectus sheath, inguinal ligament. Nerve: intercostals 8-12, iliohypogastric, ilioinguinal (L1). Action: tenses and compresses abdomen, flexes and laterally rotates spine, lowers rib cage.
See also: muscle
Medical Dictionary, © 2009 Farlex and Partners
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