spermatogenetic

spermatogenesis

[spur-mat-uh-jen-uh-sis, spur-muh-tuh-]
noun Biology.
the origin and development of spermatozoa.

Origin:
1880–85; < Neo-Latin; see spermato-, -genesis

spermatogenetic [spur-muh-toh-juh-net-ik, sper-mat-oh-] , adjective
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World English Dictionary
spermatogenesis (ˌspɜːmətəʊˈdʒɛnɪsɪs)
 
n
See also spermatocyte the formation and maturation of spermatozoa in the testis
 
spermatogenetic
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

spermatogenesis sper·mat·o·gen·e·sis (spər-māt'ə-jěn'ĭ-sĭs, spûr'mə-tə-)
n.
Formation and development of spermatozoa by meiosis and spermiogenesis. Also called spermatocytogenesis.


sper·mat'o·ge·net'ic (-jə-nět'ĭk) or sper·mat'o·gen'ic (-jěn'ĭk) adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
spermatogenesis   (spər-māt'ə-jěn'ĭ-sĭs, spûr'mə-tə-)  Pronunciation Key 
The formation and development of spermatozoa. Spermatogenesis in humans begins with the spermatogonium, the diploid cell that undergoes mitosis to form new spermatogonia as well as cells called primary spermatocytes. Each primary spermatocyte then undergoes the first meiotic division to produce two secondary spermatocytes. Each secondary spermatocyte undergoes the second meiotic division to produce two nonmotile cells called spermatids. The four spermatids then develop flagella and become sperm. Since some of the original spermatogonia replace themselves, the males are able to produce large numbers of sperm continuously after sexual maturity.
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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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