a layer of cells capable of division and differentiation; spec. = germ layer n. at germ, n. compounds 3.
| 单词 | θ18833 |
| 释义 | the world > life > biology > biological processes > procreation or reproduction > embryo or fetus > embryo parts > [noun] > membrane and layers of cells (23) germinal layer1836 a layer of cells capable of division and differentiation; spec. = germ layer n. at germ, n. compounds 3. cell layer1843 a layer of cells, spec. the endoderm, mesoderm, or ectoderm of the early embryo. mucous layer1846 Embryology. The inner layer of a blastocyst, the endoderm. Now historical. germ layer1855 any of the layers of cells into which the blastoderm divides (ectoderm, endoderm, and mesoderm); (in early use also) †the blastoderm itself (obsolete… mesoblast1857 Cell Biology. L. J. R. Agassiz's name for: a cell nucleus. Obsolete. rare. blastoderm1859 The germinal skin or membrane surrounding the yolk in the impregnated living ovum, and constituting the superficial layer of the embryo in its… head fold1873 a fold under the cephalic end of the blastoderm in an early amniote embryo, from which the anterior part of the body develops. mesoderm1873 Embryology. The middle of the three germinal layers of the embryo (in all metazoans except sponges and coelenterates), from which the body's… epiblast1875 Biology. The outermost of the three layers constituting the wall of the blastoderm when fully formed. hypoblast1875 Biology. The inner layer of cells in the blastoderm, n. splanchnopleure1875 one of the two layers or divisions of the mesoblast. mesenchyme1881 A loosely organized tissue, chiefly mesodermal in origin (e.g. the parenchyma of cestodes and trematodes); esp. (in vertebrates) the embryonic… acroblast1884 Embryology. In the terminology of J. Kollmann: a germ layer giving rise to embryonic mesenchyme; a cell of such tissue. Now disused. mesothelium1886 Originally: the layer of somatic mesoderm that lines the coelom of the vertebrate embryo. Later also: the epithelium (or epithelium-like layer)… epimere1890 Embryology. In vertebrate embryos, that part of the mesoderm, lying adjacent to the notochord, which subsequently divides to form the dermatome… mesectoderm1894 Mesenchyme that is derived from ectoderm or the neural crest rather than from mesoderm. Also: the outer layer of blastoderm before its… mesendoderm1894 Mesenchyme that is derived from endoderm rather than from mesoderm. Also: the inner layer of blastoderm before its differentiation into endoderm… cœloblast1895 The endoderm of an insect, or part of the endoblast as distinguished from the myoblast. placode1907 A localized thickening of the ectoderm in a vertebrate embryo which contributes to the formation of a sensory organ, ganglion, feather or scale, etc. shield1913 Embryology. (See quot. 1913.) mesentoderm1921 = mesendoderm, n. meristoderm1945 A superficial layer of meristematic cells found in some brown algae, which remains active in the adult sporophyte and contributes to intercalary… bilayer1962 A layer or film two molecules thick; esp. one composed of lipids or phospholipids, as in cell membranes. |
| 随便看 |
英语词典包含1132095条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。