vitelline membrane
21egg membrane — any of several investments surrounding the oocyte: if derived from the oocyte itself, as the vitelline membrane, it is called primary; if from the follicular cells, as the zona pellucida, it is called secondary; if from the oviduct, as the… …
22ovular membrane — vitelline m …
23yolk membrane — vitelline m …
24membrana vitellina — vitelline membrane …
25vitellinemembrane — vitelline membrane n. 1. The membrane that develops around an oocyte in insects, mollusks, amphibians, and birds. 2. The zona pellucida. * * * …
26vitellin — vitellin, ine [ vitelɛ̃, in ] adj. et n. m. • 1836; « semblable au jaune d œuf » 1256; du lat. vitellus ♦ Biol. 1 ♦ Relatif au vitellus. Membrane vitelline, qui entoure le jaune d œuf, (anat. humaine) qui entoure l ovule fécondé. 2 ♦ N. m.… …
27animal development — Introduction the processes that lead eventually to the formation of a new animal starting from cells derived from one or more parent individuals. Development thus occurs following the process by which a new generation of organisms is produced by …
28fertilization — fertilizational, adj. /ferr tl euh zay sheuhn/, n. 1. an act, process, or instance of fertilizing. 2. the state of being fertilized. 3. Biol. a. the union of male and female gametic nuclei. b. fecundation or impregnation of animals or plants. 4.… …
29Egg activation — After the fusion of the sperm plasma membrane and the egg plasma membrane after fertilization, animal eggs go through a process called egg activation to prepare the egg for development.There are three functions of egg activation: # Block to… …
30Oocyte activation — Oocyte (or ovum/egg) activation is a series of processes that occur in the oocyte after fertilisation. Sperm entry causes calcium release into the oocyte. In mammals, this has been proposed to be caused by the introduction of phospholipase C… …
