QUE SIGNIFIE SPERMATOZOON EN ANGLAIS
Spermatozoïde
Un spermatozoïde est un spermatozoïde mobile ou une forme mobile de la cellule haploïde qui est le gamète masculin. Un spermatozoïde joint un ovule pour former un zygote. Les spermatozoïdes contribuent environ la moitié de l'information génétique nucléaire à la progéniture diploïde. Chez les mammifères, le sexe de la progéniture est déterminé par le spermatozoïde: un spermatozoïde portant un chromosome Y conduit à une progéniture mâle, tandis qu'un portant un chromosome X entraînera une progéniture féminine. Les cellules de sperme ont d'abord été observées par Anton van Leeuwenhoek en 1677.
définition de spermatozoon dans le dictionnaire anglais
La définition de spermatozoïde dans le dictionnaire est l'une des cellules reproductrices mâles libérées dans le sperme au cours de l'éjaculation, composé d'une tête en forme d'œuf aplati, un long cou, et une queue Whiplike par lequel il se déplace pour féconder l'ovule femelle. sperme, zoosperme.
MOTS EN ANGLAIS EN RAPPORT AVEC «SPERMATOZOON»
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10 LIVRES EN ANGLAIS EN RAPPORT AVEC «SPERMATOZOON»
Découvrez l'usage de
spermatozoon dans la sélection bibliographique suivante. Des livres en rapport avec
spermatozoon et de courts extraits de ceux-ci pour replacer dans son contexte son utilisation littéraire.
1
Gametes - The
Spermatozoon
This volume, and its companion volume on the oocyte, provide a wide-ranging analysis of the gametes and their reproductive role in humans.
Jurgis Gediminas Grudzinskas, J. L. Yovich,
1995
2
Boar Reproduction: Fundamentals and New Biotechnological Trends
(1 Tailless spermatozoon. e Bicephalic spermatozoon with tail coiled at the
midpiece displaying a moderate intensity coiling (—>). f Acephalic spermatozoon
. g Immature spermatozoon with distal cytoplasmic droplet and tail folded at the ...
Sergi Bonet, Isabel Casas, William V Holt,
2013
3
Competition Science Vision
The changes which transform the spermatid into spermatozoon or sperm are
associated mainly with the reduction of the weight by losing all superfluous
material and the development of tail for movement. • During spermeiogenesis,
the ...
For entry into the ovum, the spermatozoon must first pass between the cells of the
corona radiata, penetrate the zona pellucida and fuse with the oocyte cell
membrane. Passage of the spermatozoon through the corona is considered to be
due ...
T. A. McGeady, P. J. Quinn, E. S. FitzPatrick,
2013
5
Pregnancy After Assisted Reproductive Technology
Pregnancy after intracytoplasmic . spermatozoon injection Willem Verpoest and
Paul Devroey Pregnancy After Assisted Reproductive Technology, ed. Eric R. M.
Iauniaux and Botros R. M. B. Rizk. Published by Cambridge University Press.
Eric Jauniaux, Botros Rizk,
2012
6
WHO Laboratory Manual for the Examination of Human Semen and ...
A spermatozoon with a single defect. e.g.. head defect. is scored by depressing
that single key and the spermatozoon is counted as one cell. A spermatozoon
with head, midpiece and tail defects is scored by depressing the three
appropriate ...
World Health Organization,
1999
7
Biotechnology for Livestock Production
Entry of spermatozoon into the oocyte To enter the oocyte, the spermatozoon
must first penetrate the cumulus mass, if this is still present, the zona pcllucida
and the vitelline membrane. The spermatozoon makes its way through the
cumulus ...
8
Overview and Strategies of Ephemeroptera and Plecoptera
REFERENCE Afzelius, B. A. (1979): Sperm structure in relation to phylogeny in
lower metazoa. pp. 243-251. In. The Spermatozoon. Maturation. Motility, Sur face
Properties and Comparative Aspects, D.W. Fawcett and J.M. Bedford (eds.).
9
A Textbook of Experimental Cytology
sphere lies on or near a line joining the centre of the zygote nucleus to the point
of entry of the spermatozoon. The asters of the first cleavage are apparently
formed by a polar migration of ' archiplasm ' from the centre of the male aster as ...
10
A Dictionary of Entomology
Surface of mature Spermatozoon structurally uniform and consists of a Plasma
Membrane surrounded by a coat of varying size and complexity. Outer coat (
Glycocalyx) consists of glycoprotein-proteinaceous rods oriented at a right angle
to ...
10 ACTUALITÉS CONTENANT LE TERME «SPERMATOZOON»
Découvrez de quoi on parle dans les médias nationaux et internationaux et comment le terme
spermatozoon est employé dans le contexte des actualités suivantes.
Oldest animal sperm found inside fossilized worm cocoon
A fossilized spermatozoon fragment; the scale bar is 1 micrometre long. The remains of long, thin cells preserved inside the 50-million-year-old fossilized cocoon ... «Nature.com, juil 15»
Poetry: Fraught sex and sexuality and an unusual provenance
as that double o in spermatozoon,. which enters by its own locomotion –. the flagellum, its tiny whip and scourge. Sex and sexuality in other poems are equally ... «Irish Times, juil 15»
Donald Trump's plan to save America
When I was a spermatozoon, I was like, “I don't want to be born into some loser family. I want to be born to a real estate tycoon worth $400m.” So I worked my ass ... «Telegraph.co.uk, juin 15»
The Wannabes: Six songs fit for fake Wannabes
But this silly wannabe pop singer got one thing right — the other route is to be a lucky royalty spermatozoon, like baby Charlotte, and 'one die one cad wyell be ... «SDE Entertainment News, juin 15»
The Wannabes: I can't stand 'Nerea', it praises deadbeat dads
Because it encourages wannabe baby daddies to cheat naive women into carrying their pregnancy to term, in the belief that these spermatozoon bearing ... «SDE Entertainment News, mai 15»
Wild Tales — review
But if he had lived in 21st-century Argentina — embattled, identity-troubled, marooned at the end of a landmass shaped like a deranged spermatozoon — he ... «Financial Times, mars 15»
Lessons worth learning from Fidel's life
... who my father is' (their only accomplishment in life themselves being having out-swam a few other spermatozoon), Fidel's laid back nature was refreshing. «The Standard Digital News, janv 15»
End the Biological Imamate
To assume this hereditary role, the only qualification needed is nutfa, or spermatozoon. In biology, nutfa plays a vital role in reproducing the next generation of ... «The New Indian Express, nov 14»
The Vatican's Unfinished Business -- Accepting Gays Is Great, But …
"The AIDS virus is roughly 450 times smaller than the spermatozoon. The spermatozoon can easily pass through the 'net' that is formed by the condom. «Huffington Post, oct 14»
Condom-Free Male Birth Control Could Be on the Market by 2017
All it takes is another injection and your little spermatozoon friends can swim free again. Best of all, Vasalgel's makers promise that it will cost less than a doctor's ... «Vocativ, sept 14»