Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A caplike structure at the anterior end of a spermatozoon that produces enzymes aiding in egg penetration.
from The Century Dictionary.
- noun In cytology, the body which forms the extreme anterior portion of the spermatozoön. Von Lenhossek, 1897.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun A
structure forming the end of thehead of aspermatozoon .
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a process at the anterior end of a sperm cell that produces enzymes to facilitate penetration of the egg
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
from Wiktionary, Creative Commons Attribution/Share-Alike License
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Examples
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In order to accomplish this the head of each sperm called the acrosome contains a packet of shell-dissolving enzymes—released when contact with the egg is made.
Getting Pregnant Niels H. Lauersen 2000
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As researchers from the University of Illinois explain it, normal sperm are composed of a cap-like structure that surrounds the anterior end of the sperm head called the acrosome.
NYDN Rss 2012
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As researchers from the University of Illinois explain it, normal sperm are composed of a cap-like structure that surrounds the anterior end of the sperm head called the acrosome.
NYDN Rss 2012
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As researchers from the University of Illinois explain it, normal sperm are composed of a cap-like structure that surrounds the anterior end of the sperm head called the acrosome.
NYDN Rss 2012
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The acrosome is a large membrane-limited granule that overlies the nucleus of mature sperm
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The acrosome is the packet of enzymes in the sperm’s head that produces enzymes to facilitate penetration of the egg.
A Baby at Last! Mark L. Fuerst 2010
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However, the amount of Viagra at concentrations equivalent to what a man would have thirty minutes after taking the maximum recommended 100 milligram dose leads to early activation of the acrosome reaction.
A Baby at Last! Mark L. Fuerst 2010
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If sperm undergo the acrosome reaction too early, before they contact the egg, they are incapable of fertilization.
A Baby at Last! Mark L. Fuerst 2010
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So if the majority of sperm undergo the acrosome reaction on exposure to Viagra, the drug may significantly impair their fertilizing potential.
A Baby at Last! Mark L. Fuerst 2010
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The acrosome reaction is the chemical change that enables a sperm to penetrate an egg.
A Baby at Last! Mark L. Fuerst 2010
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