Spermatozoa Development: Difference between revisions
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:Dr Mark Hill 2009, '''''UNSW Embryology''''' ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G | :Dr Mark Hill 2009, '''''UNSW Embryology''''' ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G | ||
[[Category:Human Embryo]] [[Category:Week 1]] | [[Category:Spermatozoa]] [[Category:Human Embryo]] [[Category:Week 1]] |
Revision as of 13:37, 5 April 2010
The male haploid reproductive cell, produced by meiosis in the testis (male gonad).
(More? Week 1 - Spermatogenesis)
--Mark Hill 19:34, 5 August 2009 (EST) Page under development - notice removed when completed.
Terms
spermatogenesis
(Greek, genesis = origin, creation, generation) The term used to describe the process of diploid spermatagonia division and differentiation to form haploid spermatazoa within the testis (male gonad). The process includes the following cellular changes: meiosis, reoorganization of DNA, reduction in DNA content, reorganization of cellular organelles, morphological changes (cell shape). The final process of change in cell shape is also called spermiogenesis. (More? Week 1 - Spermatogenesis)
spermiogenesis
(Greek, genesis = origin, creation, generation) The maturation process of the already haploid spermatazoa into the mature sperm shape and organization. This process involves reorganization of cellular organelles (endoplasmic reticulum, golgi apparatus, mitochondria), cytoskeletal changes (microtubule organization) and morphological changes (cell shape, acrosome and tail formation). (More? Week 1 - Spermatogenesis)
spermatogonia
The cells located in the seminiferous tubule adjacent to the basal membrane that either divide and separate to renew the stem cell population, or they divide and stay together as a pair (Apr spermatogonia) connected by an intercellular cytoplasmic bridge to differentiate and eventually form spermatazoa. (More? Week 1 - Spermatogenesis)
Leydig cell
(interstitial cell) Male gonad (testis) cell which secrete the androgen testosterone, beginning in the fetus. These cells are named after Franz von Leydig (1821 - 1908) a German scientist who histologically described these cells. (More? 2009 Lecture - Genital Development | Genital Notes | Urogenital Notes)
Glossary Links
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- Dr Mark Hill 2009, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G