Peristalsis moves feces through the colon to the rectum, where they stimulate the urge to defecate.

  • 由于结肠的蠕动,将粪便推向直肠, 直肠因粪便充盈而扩张,肠壁的伸张感受器受刺激,乃产生便意.

  • 网络文摘精选 2025-01-18 13:18:43

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