 The sternalis was first reported by Carbolius in 1604 and the name was first given by Turner in 1867.Different terminologies have been given to the sternalis due to its highly varied morphology and the disagreement on its embryonic origin.The sternalis was referred to as the "rectus sternalis," "sternalis brutorum, musculus sternalis, episternalis, parasternalis, presternalis, rectus sterni, rectus thoracis, rectus thoracicus superficialis, superficial rectus abdominis, japonicas, and thoracicus" depending on studies"."