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【系统解剖学】:结肠、直肠和肛管

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【系统解剖学】:结肠、直肠和肛管 JPEG Origin Image Download
结肠,位于盲肠和直肠之间,分为升结肠、横结肠、降结肠和乙状结肠四部分。
直肠上端平第3骶椎,下端到盆膈。直肠的后面是骶骨和尾骨;在男性直肠的前面有膀胱、前列腺和精囊;而女性则是子宫和阴道。
肛管,它的上端到盆膈,下端开口于肛门,长3-4cm。