human_reference_atlas has part cell of skeletal muscle Homo sapiens psoas major muscle http://upload.wikimedia.org/wikipedia/commons/e/e2/Anterior_Hip_Muscles_2.PNG The psoas major is a long fusiform muscle placed on the side of the lumbar region of the vertebral column and brim of the lesser pelvis. It joins the iliacus muscle to form the iliopsoas. In less than 50 per cent of subjects the psoas major is accompanied by the psoas minor. [WP,unvetted]. AS MA:0002358 NCIT:C33420 BTO:0001877 psoas major muscle EMAPA:18169 FMA:18060 psoas major m. psoas major UMLS:C0224419 Wikipedia:Psoas_major_muscle SCTID:244952006 uberon UBERON:0001298 psoas major muscle psoas muscle posterior abdominal wall muscle