腸胃壁

胃肠壁是消化道的的外層結構，由四层特殊组织组成，由胃肠道内腔从內自外分別是：

黏膜是胃肠壁的最内层，緊鄰胃肠道内腔，并与被消化的食物（食糜）直接接触[1]。

参考文献

  1. ^ Deakin, Barbara Young; et al. Wheater's functional histology : a text and colour atlas 5th. Churchill Livingstone/Elsevier. 2006: 263–265. ISBN 978-0-4430-6-8508. 
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