gastroscopy procedure illustration – endoscope examination of the human stomach - 括約肌 幅插畫檔、美工圖案、卡通及圖標手術, 插圖
internal organs in human anatomy with designation: stomach (opened), pancreasand, and duodenum; pelvis of a girl; thoracic, abdominal, and pelvic organs of a boy - 括約肌 幅插畫檔、美工圖案、卡通及圖標