second maturation division

См. также в других словарях:

• DIVISION CELLULAIRE — La capacité à croître et à se diviser est une propriété fondamentale du monde vivant dont la cellule est l’unité de base. Le processus de multiplication cellulaire présente deux caractéristiques majeures: il s’agit d’un phénomène de reproduction… …   Encyclopédie Universelle

• ootid — The nearly mature ovum after the first meiotic division has been completed and the second initiated; in most higher mammals, the second meiotic division is not completed unless fertilization occurs. [G. ootidion, a diminutive egg. See id (2)] * * …   Medical dictionary

• secondary oocyte — n an oocyte that is produced by division of a primary oocyte in the first meiotic division * * * an oocyte in the period between the first and second maturation division; it is derived from a primary oocyte shortly before ovulation by a division… …   Medical dictionary

• Germ cell — Germ cells are progenitors of the gametes. These singled out cells move through the gut to the developing gonads and undergo mitotic proliferation followed by meiosis and differentiation into either eggs or sperm (mature gametes). Plants do not… …   Wikipedia

• oocyte — The immature ovum. SYN: ovocyte. [G. oon, egg, + kytos, a hollow (cell)] primary o. an o. during its growth phase and before it completes the first maturation division. secondary o. an o. in which the first meiotic division i …   Medical dictionary

• human embryology — ▪ biology Introduction       the process encompassing the period from the formation of an embryo, through the development of a fetus, to birth.       The human body, like that of most animals, develops from a single cell produced by the union of… …   Universalium

• Oogonium — A female ancestral germ cell that divides several times to give rise to an oocyte that, in turn, develops into an ovum (an egg). The second o in oogonium is pronounced separately from the first: o·o·gon·i·um. The word was created from the prefix… …   Medical dictionary

• Birmingham campaign — inspired international support for the demonstrators.cite journal url=http://digitaljournalist.org/issue0309/lm04.html title=Birmingham 1963 work=100 Photographs that Changed the World publisher= Life , reproduced in The Digital Journalist… …   Wikipedia

• Spermatocyte — Infobox Anatomy Name = male Latin = GraySubject = 258 GrayPage = 1243 Caption = Transverse section of a tubule of the testis of a rat. X 250. Caption2 = Scheme showing analogies in the process of maturation of the ovum and the development of the… …   Wikipedia

• Life Sciences — ▪ 2009 Introduction Zoology       In 2008 several zoological studies provided new insights into how species life history traits (such as the timing of reproduction or the length of life of adult individuals) are derived in part as responses to… …   Universalium

• angiosperm — /an jee euh sperrm /, n. Bot. a plant having its seeds enclosed in an ovary; a flowering plant. Cf. gymnosperm. [ANGIO + SPERM] * * * ▪ plant Introduction       any member of the more than 300,000 species of flowering plants (division Anthophyta) …   Universalium