spermatocyte

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spermatocyte

 [sper-mat´o-sīt]
the mother cell of a spermatid.
primary spermatocyte the original large diploid cell into which a spermatogonium develops; it can later undergo the first meiotic division into the secondary spermatocyte.
secondary spermatocyte a haploid cell produced by meiotic division of the primary spermatocyte; it can then develop into the spermatid.

sper·ma·to·cyte

(sper'mă-tō-sīt'),
Parent cell of a spermatid, derived by mitotic division from a spermatogonium.
[spermato- + G. kytos, cell]

spermatocyte

/sper·ma·to·cyte/ (sper-mat´o-sīt) a cell developed from a spermatogonium in spermatogenesis.spermatocy´talspermatocyt´ic
primary spermatocyte  a diploid cell that has derived from a spermatogonium and can subsequently begin meiosis and divide into two haploid secondary spermatocytes.
secondary spermatocyte  one of the two haploid cells into which a primary spermatocyte divides, and which in turn gives origin to spermatids.

spermatocyte

(spər-măt′ə-sīt′, spûr′mə-tə-)
n.
A diploid cell that undergoes meiosis to form four spermatids. A primary spermatocyte divides into two secondary spermatocytes, which in turn divide to form the spermatids.

spermatocyte

[spur′mətōsīt′]
Etymology: Gk, sperma + kytos, cell
a male germ cell that arises from a spermatogonium. Each spermatocyte gives rise to two haploid secondary spermatocytes that become spermatids.

sper·ma·to·cyte

(spĕr-mat'ō-sīt)
Parent cell of a spermatid, derived by mitotic division from a spermatogonium.
[spermato- + G. kytos, cell]

spermatocyte

A cell of the seminiferous tubules of the testis that is converted by MEIOSIS into four SPERMATIDS.

spermatocyte

a diploid or haploid stage in male GAMETOGENESIS.

spermatocyte

the mother cell of a spermatid.

primary spermatocyte
daughter cell of a spermatogonium (an incongruous nomenclature in such an intensely masculine context). It undergoes the first meiotic division.
secondary spermatocyte
a cell produced by meiotic division of the primary spermatocyte, and which gives rise to the spermatid.
References in periodicals archive ?
340 [micro]m) shows a maximum spermatogenic activity with primary, secondary spermatocytes and spermatids; the discontinuous (23.
Increase in percentage of abnormal seminiferous tubules along with the decline in number of spermatogonia, primary spermatocytes, secondary spermatocytes and spermatids probably correspond to the decrease in testosterone production or inhibition of pituitary gonadotropin secretion, which resulted in disruption of spermatogenesis (Raji and Bolarinwa, 1997).
Examination of 1224 secondary spermatocytes suggested completely balanced disjunction in eight of the individuals (table 1).
Specifically, primary spermatocytes and secondary spermatocytes strongly expressed cPdcl2 mRNA at 10 weeks.
Three stages in the testicular cycle (Table 1) were present: (1) regressed (= quiescence), seminiferous tubules contain Sertoli cells and spermatogonia; (2) recrudescence (= recovery), proliferation of cells in the germinal epithelium is in progress, primary, secondary spermatocytes and, in some cases, spermatids are present; (3) spermiogenesis (= sperm production), lumina of seminiferous tubules lined by spermatozoa; clusters of metamorphosing spermatids are present.
Secondary spermatocytes are apparently short-lived cells because they are rare in histological samples--a finding that suggests that the second meiotic division is triggered shortly after completion of the first division.
The numerous possible combinations and morphologies of the chromosomal elements made detailed analysis of secondary spermatocytes (MII) impossible.
Histopathological examination of testicular tissue sections showed that apoptosis was confined to the basal germ cells, primary and secondary spermatocytes.
In early recrudescence, primary spermatocytes predominate, whereas in late recrudescence, secondary spermatocytes and spermatids were most abundant; (3) Spermiogenesis, lumina of the seminiferous tubules were lined by clusters of sperm or clusters of metamorphosing spermatids.
During stage III gonad wall are reduced, with organized seminiferous lobules, constituted by cells on stages of spermatogonia, primary and secondary spermatocytes and spermatids.