单选题
形成胆囊上皮的内胚层来源于（）
发布日期：2020-12-11
背胰芽的根部
肝憩室的头支
腹胰芽的根部
肝憩室的尾支
肝憩室的根部
试题解析
内胚层
内胚层是胚胎中最内的一胚层。也叫内胚叶。为后生动物发生过程所出现的胚层中，位于最内或最下的胚层。
- 中文名
- 内胚层
- 别名
- 内胚叶
- 外文名
- endoderm，entoderm，endoblast，entoblast
- 部位
- 最内或最下的胚层
上皮
epithelium动物体内外的所有游离面上被覆着的细胞层。构成它的组织称为上皮组织，其细胞称为上皮细胞。原则上在上皮内见不到血管，并且几乎没有非细胞部分（细胞间隙部分）。具有借基底膜与结缔组织相邻接等特征。
- 中文名
- 上皮
- 简介
- 游离面上被覆着的细胞层
- 外文名
- epithelium
- 表面
- 分泌有角质层
胆囊
胆囊，经外奇穴名。出《中华外科杂志》。别名胆囊点。在小腿外侧，腓骨小头直下2寸。布有腓肠肌外侧皮神经、腓浅神经肌支和胫前动脉。主治急慢性胆囊炎，胆石症，胆道蛔虫症等胆腑病症；下肢痿痹。直刺1-1.5寸。艾炷灸5-7壮；或艾条灸10-15分钟。
- 别名
- 胆囊点
- 隶属经络
- 经外奇穴
- 出处
- 《中华外科杂志》
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