Spermatocyte


Spermatocyte

Infobox Anatomy
Name = male
Latin =
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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 spermatids (young spermatozoa).
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MeshName = Spermatocytes
MeshNumber = A05.360.490.890.880

A spermatocyte is a male gametocyte which is derived from a spermatogonium. It lies in the seminiferous tubules of the testis, and divides to form sperm cells through the process of spermatogenesis.

Spermatogenesis

Initially in spermatogenesis, a spermatogonium divides by mitosis into two so-called "primary spermatocytes". A primary spermatocyte is also diploid, and, in turn, gives place by meiosis to two "secondary spermatocytes", which this time are haploid. The two secondary spermatocytes undergo a second meiotic division thereby expelling half the amount of chromosomes to form 4 haploid cells called spermatids. The spermatids mature into sperm cells, who travel through the seminiferous tubules to mature further in the epididymis.


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Look at other dictionaries:

  • 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


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