Surgical incision into the intestine.
肠切开术对肠实施的外科切开术
The absence or closure of a normal body orifice or tubular passage such as the anus, intestine, or external ear canal.
(先天性)闭锁, 无孔正常的身体孔或管道, 如肛门、肠或外耳道的缺失或闭合
Food passed from the stomach to the small intestine.
食物由胃进入小肠。
