胃：消化起始的中空器官
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胃：消化起始的中空器官
胃：消化起始的中空器官胃是消化起始的中空器官，在消化酸和酶的帮助下将食物分解为必需的营养物质以供吸收。胃由肌肉、黏膜等构成，黏膜层具有保护作用。胃酸、胃蛋白酶等参与蛋白质的分解。胃的消化过程与新陈代谢、能量获取相关，还与胆汁、脂肪酶等协同作用。胃的健康受括约肌等结构的影响。
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