图1-47 直肠和肛管黏膜(2)
妇产科学

        1直肠壶腹rectalampulla2肛柱rectalcolumn3肛窦analsinus4肛瓣analvalves5直肠横襞transversefoldsofrectum6肛提肌levatoranim.7齿状线dentateline8肛门内括约肌internalanalsphincter9肛门外括约肌externalanalsphincter    （共 173 字）     [阅读本文] >>