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Definition of Rectus abdominis

Rectus abdominis: A large muscle in the front of the abdomen that assists in regular breathing movements, supports the muscles of the spine while a person lifts something, and keeps the intestines and other abdominal organs in place.

Source: MedTerms™ Medical Dictionary
http://www.medterms.com/script/main/art.asp?articlekey=7421
Last Editorial Review: 3/19/2012

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