<prompt> The internal oblique muscle is inseed into all of the following structures except ?xiphoid processiliac crestpubic crestlinea Alba  <response>: Inseion of internal oblique muscle - 1. The uppermost fibres are inseed directly into the lower three or four ribs and their cailages. 2. The greater pa of the muscle ends in an aponeurosis through which it is inseed into the seventh, eighth and ninth costal cailages, the xiphoid process, the linea alba, the pubic crest and the pectineal line of the pubis . Ref : B D Chaurasias Human Anatomy , seventh edition , volume 2 , pg. no., 223. 