Gastrointestinal tract/ja: Difference between revisions

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~~The human gastrointestinal tract consists of the~~ [[esophagus]]~~, stomach, and intestines, and is divided into the upper and lower gastrointestinal tracts. The GI tract includes all structures between the~~ [[human mouth|~~mouth~~]] ~~and the~~ [[Human anus|~~anus~~]]~~, The tract may also be divided into~~ [[~~foregut~~]], [[~~midgut~~]]~~, and~~ [[~~hindgut~~]]~~, reflecting the~~ [[~~embryology~~|~~embryological~~]] ~~origin of each segment. The whole human GI tract is about nine meters (30 feet) long at~~ [[autopsy]]~~. It is considerably shorter in the living body because the intestines, which are tubes of~~ [[smooth muscle tissue]]~~, maintain constant~~ [[muscle tone]] ~~in a halfway-tense state but can relax in spots to allow for local distention and~~ [[peristalsis]].

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 [[Nephrozoa/ja|ほとんどの動物]]は「貫通腸」または完全な消化管を持っている。例外はより原始的なものである： [[sponge/ja|海綿動物]]は消化のための小さな孔（[[ostium (sponges)/ja|オスチウム]]）を全身に持ち、排泄のための大きな背側の孔（[[osculum/ja|排水孔]]）を持ち、[[comb jellies/ja|有櫛動物]]は腹側の口と背側の肛門孔の両方を持ち、[[cnidarians/ja|刺胞動物]]と[[acoels/ja|アコヤガイ]]は消化と排泄の両方のための単一の孔を持つ。
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+ヒトの消化管は[[esophagus/ja|食道]]、胃、腸からなり、上部消化管と下部消化管に分けられる。消化管は、[[human mouth/ja|口]]から[[Human anus/ja|肛門]]までのすべての構造を含み、各区分の[[embryology/ja|胚学的]]起源を反映して、[[foregut/ja|前腸]]、[[midgut/ja|中腸]]、[[hindgut/ja|後腸]]に分けられることもある。ヒトの消化管全体の長さは[[autopsy/ja|剖検]]で約9メートル（30フィート）である。腸は[[smooth muscle tissue/ja|平滑筋組織]]の管であり、中途半端に緊張した状態では一定の[[muscle tone/ja|筋緊張]]を維持するが、局所的な膨張と[[peristalsis/ja|蠕動]]を可能にするために部分的に弛緩することができるため、生体内ではかなり短い。
-The human gastrointestinal tract consists of the [[esophagus]],  stomach, and intestines, and is divided into the upper and lower gastrointestinal tracts. The GI tract includes all structures between the [[human mouth|mouth]] and the [[Human anus|anus]], The tract may also be divided into [[foregut]], [[midgut]], and [[hindgut]], reflecting the [[embryology|embryological]] origin of each segment. The whole human GI tract is about nine meters (30 feet) long at [[autopsy]]. It is considerably shorter in the living body because the intestines, which are tubes of [[smooth muscle tissue]], maintain constant [[muscle tone]] in a halfway-tense state but can relax in spots to allow for local distention and [[peristalsis]].
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