组胚期末复习题.doc

动物组织学与胚胎学复习题一,细胞 1. 一般把凡是具有内外两层电子密度大、深暗, 中间层电子密度小、明亮, 这种三层结构的膜称作: C A. 细胞膜 B. 质膜 C. 单位膜 D. 核膜 2. 细胞器是指: C A. 细胞质中所有的小器官 B. 细胞质中各类有形成分 C. 细胞质中具有一定形态结构、执行一定生理功能的小器官 D. 仅指线粒体、内质网、高尔基复合体 3. 多聚核蛋白体的结构是 B: A. 由多个核糖体自由聚集在一起 B. 多个核糖体由 mRNA 链串连在一起 C. 多个核糖体由 tRNA 链串起来 D. 以上都不是 4. DNA 的复制是在细胞间期的: B 期 期 期 D. 以上都不是 5. HE 染色时,伊红主要用于染: D A. 细胞核 B. 核仁 C. 细胞器 D. 细胞质 1 、解释名词概念: 单位膜, 染色体细胞增殖周期细胞分化: 分化是指胚胎细胞或体内幼稚细胞演变为成熟细胞的过程,也是细胞从低级阶段向高级阶段发展的过程。同源细胞逐渐变为结构、功能与生化特征相异的细胞的过程称细胞分化。细胞凋亡, 是一种主动的、程序性的、细胞故有的生物学过程,是由基因控制的细胞自主性死亡的一种方式。液态镶嵌模型学说 2、什么是细胞器? 其种类、形态结构和功能如何?( 重点掌握: 线粒体、内质网、高尔基体、细胞骨架系统) 3 、简述细胞有丝分裂的过程。二,上皮组织 1. Which of the following specializations of the apical surface of epithelial cells contain microtubules? B A. Microvilli B, Cilia C, Stereocilia D, Both B and C are correct 2. Which of the following statements is NOT true for the epithelium? C A. Epithelium is avascular B. Epithelium contains very little intercellular material C. Epithelial cells lack mitotic activity D. All epithelial cells ofa pseudostratified epithelium ona basal lamina 3. Stratified squamous epithelia are characterized by always having: D keratinized layer B. Squamous cells in proximity to the basement membrane C. Majority of cells that are squamous in shape D. Squamous cells at the free surface 4. Mesothelium can be defined as: B simple squamous epithelium lining the blood vessels simple squamous epithelium lining the body cavities transitional epithelium pseudostratified epithelium E. None of the above is correct 5. The type of cell junction that prevents the contents of the stomach or urinary bladder from leaking into surrounding tissues is the E A. intermediate junction. B. gap junction. C. hemidesmosome. D. desmosome. E. tight junction. 1 、概念内皮间皮微绒毛纤毛连接复合体胞吐分泌 2 、被覆上皮的类型及分布位置。 3 、上皮细胞侧面连接结构的种类, 结构与功能如何? 三,结缔组织 1 1. Each describes connective tissue Except :C A. relatively few cells B. extensive intercellular substance C. similar cell structure in all types D. fibers scattere