part of part of immediately superficial to innervated by innervated_by develops from develops from has muscle origin has muscle origin has muscle insertion has muscle insertion transformation of Homo sapiens rib intercostal nerve abdominal external oblique muscle http://upload.wikimedia.org/wikipedia/commons/3/32/Illu_trunk_muscles.jpg m. obliquus externus abdominis obliquus externus abdominis UMLS:C0224375 external abdominal oblique external oblique abdominis muscle Behind the thorax, the lateral group (of muscles in reptiles and mammals) remains essentially as for amphibians. (It breaks into three sheet-like layers: external oblique muscle, the internal oblique, and the transversus). More anteriorly, however, the ribs, now enlarged, penetrate and alter this group of muscles. The transversus is excluded from the thorax and the external and internal obliques become, respectively, the external and internal intercostal muscles, which contribute to the new function of ventilation of the lungs.[well established][VHOG] SCTID:244946005 MA:0002345 external oblique external oblique external oblique muscle VHOG:0000788 Wikipedia:Abdominal_external_oblique_muscle obliquus abdominis externus oblique strength external oblique abdominis EMAPA:18162 UBERON:0005442 The lateral abdominal wall muscle that is the most superficial, immediately superficial to the internal oblique. external abdominal oblique muscle obliquus externus abdominis muscle external oblique abdominal muscles FMA:13335 EHDAA:8248 external abdominal oblique muscle NCIT:C32567 obliquus externus obliquus externus abdominis abdominal external oblique muscle EHDAA2:0000469 abdominal internal oblique muscle inguinal ligament anterior abdominal wall external oblique pre-muscle mass skeletal muscle organ, vertebrate abdominal oblique muscle