spermatogenesis


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Related to spermatogenesis: Sertoli cells, oogenesis, gametogenesis

spermatogenesis

 [sper″mah-to-jen´ĕ-sis]
the development of mature spermatozoa from spermatogonia; it includes spermatocytogenesis and spermiogenesis.

sper·ma·to·gen·e·sis

(sper'mă-tō-jen'ĕ-sis),
The entire process by which spermatogonial stem cells divide and differentiate into sperms. The process has three phases: spermatocytogenesis, meiosis, and spermiogenesis.
See also: spermiogenesis, meiosis, spermatocytogenesis.
Synonym(s): spermatogeny
[spermato- + G. genesis, origin]

spermatogenesis

/sper·ma·to·gen·e·sis/ (-jen´ĕ-sis) the process of formation of spermatozoa, including both spermatocytogenesis and spermiogenesis.

spermatogenesis

(spər-măt′ə-jĕn′ĭ-sĭs, spûr′mə-tə-)
n.
Formation and development of spermatozoa by meiosis and spermiogenesis.

sper·mat′o·ge·net′ic (-jə-nĕt′ĭk), sper·mat′o·gen′ic (-jĕn′ĭk) adj.

spermatogenesis

[spərmat′əjen′əsis, spur′-]
Etymology: Gk, sperma + genesis, origin
the process of development of spermatozoa, consisting of two stages. In the first stage, spermatogonia become spermatocytes, which develop into spermatids. In the second stage, called spermiogenesis, the spermatids become spermatozoa. Also called spermatocytogenesis, spermiogenesis. spermatogenic, spermatogenous, adj.
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Spermatogenesis

spermatogenesis

The process of sperm production, which occurs in the testes.

spermatogenesis

Physiology The production of male sex gametes; the maturational changes that transform spermatids into spermatozoa. See Sperm.

sper·ma·to·gen·e·sis

(spĕr'mă-tō-jen'ĕ-sis)
The entire process by which spermatogonial stem cells divide and differentiate into spermatozoa.
See also: spermiogenesis
Synonym(s): spermatocytogenesis.
[spermato- + G. genesis, origin]
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SPERMATOGENESIS
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SPERMATOGENESIS

spermatogenesis

(sper?mat-o-jen'e-sis) [? + genesis, generation, birth]
The formation of mature functional spermatozoa. In the process, undifferentiated spermatogonia become primary spermatocytes, each of which divides to form two secondary spermatocytes. Each of these divides to form two spermatids, which transform into functional motile spermatozoa. In the process, the chromosome number is reduced from the diploid to the haploid number.
See: illustration; gametogenesis; maturation; meiosisillustration

spermatogenesis

the form ofMEIOSIS producing male gametes. see GAMETOGENESIS.

Spermatogenesis

The process by which sperm develop to become mature sperm, capable of fertilizing an ovum.
Mentioned in: Infertility

spermatogenesis

the development of mature spermatozoa from spermatogonia; it includes spermatocytogenesis and spermiogenesis.
References in periodicals archive ?
Selenium was reported to protect against sperm DNA damage and is required for normal testicular development, spermatogenesis, motility, and sperm function (59).
Germ cell transport across the seminiferous epithelium during spermatogenesis," Physiology 29(4): 286-298.
Several papers have reported that treatment of experimental animals with the fungicide Carbendazime (MBC) brings about disruption of spermatogenesis [13,26].
Testicular structure and semicystic spermatogenesis in a specialized ovuliparous species: Scorpaena notata (Pisces, Scorpaenidae).
Tomita (1967) gave broad descriptions of gametogenesis in wild-caught Haliotis discus hannai (Ino, 1953), dividing oogenesis into 7 stages and spermatogenesis into 4 stages.
Defective spermatogenesis and some epididymal pathologies are associated with an increase in abnormal sperm.
Dermoid cysts lack cytologic atypia, and in most cases, the adjacent testis has a normal appearance with active spermatogenesis (Figure 3, C), although there may be compressive atrophy in the parenchyma immediately adjacent to the cyst.
Other ingredients, such as selenium, are essential for normal spermatogenesis and male fertility, whereas zinc is found in high levels in semen and is associated with improvements in sperm quality.
Sharks with uncalcified claspers had testes in early stages of spermatogenesis and a small amount of sperm present in the lower epididymis.
In addition, zinc is a spermatogenesis and prostate marker (11).