spermiogenesis


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Related to spermiogenesis: spermiation, Spermatocytogenesis

spermiogenesis

 [sper″me-o-jen´ĕ-sis]
the second stage in the formation of spermatozoa, in which the spermatids transform into spermatozoa.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

sper·mi·o·gen·e·sis

(sper'mē-ō-jen'ĕ-sis),
That segment of spermatogenesis during which immature spermatids shed much of their cytoplasm and develop a flagellum and acrosomal granule, becoming, through this process, sperms.
[sperm- + G. genesis, origin]
Farlex Partner Medical Dictionary © Farlex 2012

spermiogenesis

(spûr′mē-ō-jĕn′ĭ-sĭs)
n.
Transformation of a spermatid into a spermatozoon.

sper′mi·o·ge·net′ic (-jə-nĕt′ĭk) adj.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

sper·mi·o·gen·e·sis

(spĕr'mē-ō-jen'ĕ-sis)
That segment of spermatogenesis during which immature spermatids are transformed into elongated sperms.
[sperm- + G. genesis, origin]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
For both sexes, significantly (P < 0.05) higher GCA values occurred during the ripening stages (postvitellogenesis and spermiogenesis) and minimum values during the partial spawning and quietness stages (undifferentiated and spent).
Spermiogenesis in Psilochorus simoni (Berland, 1911) (Pholcidae, Araneae): evidence for considerable within-family variation in sperm structure and development.
Month n Regressed Recrudescent Spermiogenesis May 2 0 0 2 June 6 0 0 6 July 1 0 0 1 August 5 2 0 3 September 1 0 0 1 October 3 1 0 2 November 1 1 0 0 Table 2.
In rats, other effects have been related to CBZ exposure in vivo, such as a decrease in spermatid number and sperm motility, morphological abnormalities, failure of spermiogenesis, and infertility (Rama et al., 2014).
Structural comparison between eupyrene and apyrene spermiogenesis in Calpodes ethlius (Hesperiidae, Lepidoptera).
However, it is known that small increases in the amount of ROS in the testis can lead to exacerbation of apoptosis process not only during spermatocytogenesis, but also during spermiogenesis [6], which constitutes the later stages of spermatogenesis.
[sup][7] Although the exact mechanism of acrosomal absence was not clear, one common view is that globozoospermia likely originates during spermiogenesis. Here, we found that acrosomeless sperm and small-acrosomal sperm were the overwhelming types of cells in partial globozoospermia.
The spermatids subsequently undergo a morphological and molecular remodeling process, known as spermiogenesis, during which the head, middle piece, and flagellum of the spermatozoa differentiate (Eddy, 2006).
The testicular histological profile of the control group shows seminiferous tubules filled with sperm, lined by epithelium consisting of two cell types; the cells in different stages of spermatogenesis and spermiogenesis, which are called spermatogenic cells and Sertoli cells (Fig.
Nuclear vacuoles may be the remnants of unnecessary cytoplasm and organelles that should have been eliminated during spermiogenesis [36, 37].