圖1-48 肛門括約肌
婦產科學

        1肛門外括約肌externalanalsphincter2深部deeppart3淺層superficialpart4皮下層subcutaneouspart5內痔internalhemorrhoid6肛門內括約肌internalanalsphincter[臨床解剖學要點]肛門括約肌包括內括約肌和外括約肌。肛門內括約肌是直腸環(huán)形肌層的增厚部分,屬不    （共 397 字）     [閱讀本文] >>