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Germinal Epithelium (other)
Germinal epithelium can refer to: * Germinal epithelium (female), a layer of cells covering the ovary * Germinal epithelium (male), a layer of cells covering the testicle * Germ layer, primary tissue layer formed during embryogenesis in animals See also * Germinal (other) * Epithelium Epithelium or epithelial tissue is one of the four basic types of animal tissue, along with connective tissue, muscle tissue and nervous tissue. It is a thin, continuous, protective layer of compactly packed cells with a little intercellul ... {{disambig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Germinal Epithelium (female)
The ovarian surface epithelium, also called the germinal epithelium of Waldeyer, or coelomic epithelium is a layer of simple squamous-to-cuboidal epithelial cells covering the ovary. The term ''germinal epithelium'' is a misnomer as it does not give rise to primary follicles. Composition These cells are derived from the mesoderm during embryonic development and are closely related to the mesothelium of the peritoneum. The germinal epithelium gives the ovary a dull gray color as compared with the shining smoothness of the peritoneum; and the transition between the mesothelium The mesothelium is a membrane composed of simple squamous epithelial cells of mesodermal origin, which forms the lining of several body cavities: the pleura (pleural cavity around the lungs), peritoneum (abdominopelvic cavity including the mesente ... of the peritoneum and the cuboidal cells which cover the ovary is usually marked by a line around the anterior border of the ovary. Diseases Ovarian surface e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Germinal Epithelium (male)
The germinal epithelium is the epithelial layer of the seminiferous tubules of the testicles. It is also known as the wall of the seminiferous tubules. The cells in the epithelium are connected via tight junctions. There are two types of cells in the germinal epithelium. The large Sertoli cells (which are not dividing) function as supportive cells to the developing sperm. The second cell type are the cells belonging to the spermatogenic cell lineage. These develop to eventually become sperm cells (spermatozoon A spermatozoon (; also spelled spermatozoön; ; ) is a motile sperm cell, or moving form of the haploid cell that is the male gamete. A spermatozoon joins an ovum to form a zygote. (A zygote is a single cell, with a complete set of chromosomes, t ...). Typically, the spermatogenic cells will make four to eight layers in the germinal epithelium.Junqueira's Basic Histology: Text and Atlas, Thirteenth Edition References External links * - "Male Reproductive System: test ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Germ Layer
A germ layer is a primary layer of cells that forms during embryonic development. The three germ layers in vertebrates are particularly pronounced; however, all eumetazoans (animals that are sister taxa to the sponges) produce two or three primary germ layers. Some animals, like cnidarians, produce two germ layers (the ectoderm and endoderm) making them diploblastic. Other animals such as bilaterians produce a third layer (the mesoderm) between these two layers, making them triploblastic. Germ layers eventually give rise to all of an animal’s tissues and organs through the process of organogenesis. History Caspar Friedrich Wolff observed organization of the early embryo in leaf-like layers. In 1817, Heinz Christian Pander discovered three primordial germ layers while studying chick embryos. Between 1850 and 1855, Robert Remak had further refined the germ cell layer (''Keimblatt'') concept, stating that the external, internal and middle layers form respectively the e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Germinal (other)
Germinal may refer to: *Germinal (French Republican Calendar), the seventh month of the calendar, approximately March 21 - April 19 Émile Zola * ''Germinal'' (novel), an 1885 novel by Émile Zola ** ''Germinal'' (1913 film), a French silent film based on the Zola novel directed by Albert Capellani ** ''Germinal'' (1963 film), a French film based on the Zola novel directed by Yves Allégret ** ''Germinal'' (1993 film), a French film based on the Zola novel directed by Claude Berri Medicine * Germinal epithelium (other), either: ** Germinal epithelium (male), a layer of cells covering the testicle ** Germinal epithelium (female), a layer of cells covering the ovary ** Germinal epithelium or germ layer, a layer of cells formed during animal embryogenesis * Germinal center, area of lymph tissue rich with B cells Other uses * ''Germinal'' (journal), a Jewish anarchist journal from London * ''Germinal'' (F735), a ship of the French Marine Nationale *K.F.C. Germinal Beerscho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
