Acrosome reaction - Wikipedia
WEBThe process. The acrosomal reaction typically occurs in the ampulla of the fallopian tube, the site of fertilization, when the sperm penetrates the secondary oocyte. Prior events prepare for the acrosome reaction.
Acrosome - Wikipedia
WEBThe acrosome is an organelle that develops over the anterior (front) half of the head in the spermatozoa (sperm cells) of humans, and many other animals. It is a cap-like structure derived from the Golgi apparatus. In placental mammals, the acrosome contains degradative enzymes (including hyaluronidase and acrosin). [1]
Mechanism of Acrosome Biogenesis in Mammals - PMC - National …
WEBSep 18, 2019 · During sexual reproduction, two haploid gametes fuse to form the zygote, and the acrosome is essential to this fusion process (fertilization) in animals. The acrosome is a special kind of organelle with a cap-like structure that covers the anterior portion of the head of the spermatozoon.
Mechanism of sperm capacitation and the acrosome reaction: …
WEBSep 24, 2012 · After binding to the egg ZP, the spermatozoon undergoes an exocytotic process called the acrosome reaction (AR). 5,6,7,8 This event is required for fertilization, because it enables passage of the spermatozoon through the ZP and its subsequent fusion with the egg oolema.
Acrosome Reaction - an overview | ScienceDirect Topics
WEBAcrosome reaction is a process of exocytosis involving the fusion of the outer acrosomal membrane with the plasma membrane of the sperm head. Next, fenestration and vesiculation of the fused membranes occur.
The Acrosomal Matrix - PMC - National Center for Biotechnology …
WEBSpecific issues that need to be addressed include (1) the contribution of acrosomal biogenesis to the fertility of individual sperm, (2) the timing of acrosomal exocytosis in vivo, (3) the role of acrosomal compartmentalization (including structurally distinct domains within the vesicle and biochemical segregation of overlapping soluble ...
Acrosome Reaction - an overview | ScienceDirect Topics
WEBAcrosome reaction is an exocytotic process fundamental for successful penetration of the oocyte. In vitro, acrosome reaction can be induced by sperm exposure to progesterone or calcium ionophore, which is referred to as acrosome reaction to ionophore challenge. The acrosome reaction is measured using fluorescent dyes.
The Acrosome Reaction: A Historical Perspective - PubMed
WEBWhile the vesicle membrane initially holding excreting molecules remains on the cell surface during exocytosis, the outer acrosomal membrane and plasma membrane are lost by forming vesicles during acrosome reaction. In this context, the latter process resembles a release of exosome.
What is the acrosome reaction? - inviTRA
WEBAug 31, 2022 · The acrosome reaction is a process that takes place in the sperm through which a series of enzymes are released. These enzymes weaken the pellucid layer of the egg. The sperm is then able to cross the membrane of the oocyte to reach and fertilize it.
Acrosome Reaction - an overview | ScienceDirect Topics
WEBThe acrosome reaction culminates in fusion (and shedding) of the spermatozoal plasma membrane and outer acrosomal membrane, which allows acrosomal contents to be released and thus aid in penetration of the vestments of the oocyte and fusion with the oocyte's plasma membrane.