human_reference_atlas has part cell of skeletal muscle Homo sapiens gracilis http://upload.wikimedia.org/wikipedia/commons/e/e2/Anterior_Hip_Muscles_2.PNG gracilis muscle NCIT:C52935 BTO:0000536 galen:Gracilis musculus gracilis SCTID:181689005 uberon MA:0002311 FMA:43882 AAO has minor and major gracilis, which merge together, attaching the pelvic rim to the tibiofibula - this could be grouped with the mammalian gracilis at some level; note the current insertion site is 'tibia' which would be modified for amphibian tibiafibula AS gracilis muscle The most superficial muscle on the medial side of the thigh. It is thin and flattened, broad above, narrow and tapering below. It arises by a thin aponeurosis from the anterior margins of the lower half of the symphysis pubis and the upper half of the pubic arch. gracilis muscle Wikipedia:Gracilis_muscle UBERON:0000950 EMAPA:36231 A&P heads in rat, single head in humans[DOI:10.1002/ar.22919] UMLS:C0224439 adductor muscle of hip Muscle of medial compartment of thigh