- Spermatocyte
Infobox Anatomy
Name = male
Latin =
GraySubject = 258
GrayPage = 1243
Caption = Transverse section of atubule of thetestis of arat . X 250.
Caption2 = Scheme showing analogies in the process of maturation of theovum and the development of thespermatids (youngspermatozoa ).
Width = 325
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MeshName = Spermatocytes
MeshNumber = A05.360.490.890.880A spermatocyte is a
male gametocyte which is derived from aspermatogonium . It lies in theseminiferous tubules of the testis, and divides to formsperm cells through the process ofspermatogenesis .Spermatogenesis
Initially in
spermatogenesis , a spermatogonium divides bymitosis into two so-called "primary spermatocytes". A primary spermatocyte is also diploid, and, in turn, gives place bymeiosis to two "secondary spermatocytes", which this time arehaploid . The two secondary spermatocytes undergo a second meiotic division thereby expelling half the amount ofchromosomes to form 4 haploid cells calledspermatids . The spermatids mature into sperm cells, who travel through the seminiferous tubules to mature further in theepididymis .
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См. также в других словарях:
spermatocyte — [ spɛrmatɔsit ] n. m. • 1880; de spermato et cyte ♦ Biol. Cellule germinale mâle qui devient une spermatide, puis un spermatozoïde. ● spermatocyte nom masculin Cellule de la lignée germinale mâle dans le règne animal. spermatocyte [spɛʀmatɔsit] n … Encyclopédie Universelle
Spermatocyte — Sper ma*to*cyte, n. [Spermato + Gr. ???? a hollow vessel.] (Physiol.) Same as {Spermoblast}. [1913 Webster] … The Collaborative International Dictionary of English
spermatocyte — [spʉr′mə tə sīt΄, spər mat′əsīt] n. [ SPERMATO + CYTE] 1. Bot. a cell that develops into a spermatozoid 2. Zool. a stage in the development of the male sex cell, originating by growth from a spermatogonium … English World dictionary
spermatocyte — The premeiotic parental cell of the spermatids; the primary spermatocyte before the initiation of the first meiotic division; the secondary spermatocyte after completion of the first meiotic division, but before the initiation of the second… … Glossary of Biotechnology
spermatocyte — spermatocytal, adj. /sperr mat euh suyt , sperr meuh teuh /, n. Cell Biol. a male germ cell (primary spermatocyte) that gives rise by meiosis to a pair of haploid cells (secondary spermatocytes) that give rise in turn to spermatids. [1885 90;… … Universalium
spermatocyte — noun Date: 1886 a cell giving rise to sperm cells; especially a cell that is derived by mitosis from a spermatogonium and ultimately gives rise by meiosis to four haploid spermatids … New Collegiate Dictionary
spermatocyte — n. [Gr. sperma, seed; kytos, container] An auxocyte of males that give rise to the spermatids … Dictionary of invertebrate zoology
spermatocyte — noun A male gametocyte, from which a spermatozoon develops … Wiktionary
spermatocyte — Parent cell of a spermatid, derived by mitotic division from a spermatogonium. [spermato + G. kytos, cell] primary s. the s. derived by a growth phase from a spermatogonium … Medical dictionary
spermatocyte — n. diploid cell which separates into four spermatids through meiosis (Biology) … English contemporary dictionary
