transverse muscle of abdomen


A muscle with origin from the seventh to the twelfth costal cartilages, lumbar fascia, iliac crest, and inguinal ligament; with insertion into the xiphoid cartilage, linea alba, and the pubic tubercle and pecten, with nerve supply from the lower thoracic nerve, and whose action compresses the abdominal contents.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.