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Acrosome

Acrosome

(Science: cell biology) a membrane-bound compatment at the tip of the head of a sperm which contains lytic enzymes (hyaluronidase in mammalian sperm) which digest the outer surface of the egg and allow the sperm to inject its haploid dna.

The compartment is secreted by the golgi apparatus of the spermatid.

Origin: gr. Soma = body a process at the anterior end of a sperm Cell that produces enzymes to facilitate penetration of the egg.Found at the head of a sperm gamete, the acrosome is an enzyme filled sac that assists in breaking down the wall of the egg mother cell so that the sperm can fertilise the egg.


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sperm

... journey successfully to meet the egg C. the egg's plasma membrane depolarizes, preventing other sperm from entering D. the enzymes of the egg's acrosome destroy all non-penetrating sperm

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by RADIOhead
Sun May 22, 2011 6:50 pm
 
Forum: General Discussion
Topic: sperm
Replies: 0
Views: 579

4 Functions of the Golgi Apparatus

... of lysosomes - > It is essential for the maintenance of rapture plasma membranes and other cell organelle membrane.. -> In sperms it form acrosome which is essential for penetrating into ovum..

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by akki313
Sun May 16, 2010 6:38 pm
 
Forum: Cell Biology
Topic: 4 Functions of the Golgi Apparatus
Replies: 3
Views: 2562

Mammalian Gametes

Basically then, the male gamete has alot of its cytoplasm reduced with a big huge vesicle called the acrosome that contains the enzymes to eat thru the outer slimy layer that surrounds the egg cell. It has concentrated all of its mitocondria to the end where there is the ...

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by kolean
Wed Sep 02, 2009 10:41 pm
 
Forum: Cell Biology
Topic: Mammalian Gametes
Replies: 3
Views: 7516

Spermatozoa staining

... their viability/vitality. I read that double-staining (trypan blue/congo red + Giemsa) is good to differ dead/alive and also the presence of acrosome. Triple-staining (eosin/nigrosin+Bismarck brown+...(I forgot the third dye)) is said good too, but I don't have all the component. Well, the ...

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by DoctorStein
Sun Jun 29, 2008 11:14 am
 
Forum: Cell Biology
Topic: Spermatozoa staining
Replies: 0
Views: 1680

Evolution of reproduction: Mobility of cells

... i have no time to explain that now. maybe later or tomorrow. Strange old world isn't it? How and why is the sperm adapted with enzymes in the acrosome and with various glandular fluids for a location which it has never visited befoe? I'd love to find out the answer.

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by Heronumber0
Sat Jul 07, 2007 6:46 pm
 
Forum: Evolution
Topic: Evolution of reproduction: Mobility of cells
Replies: 6
Views: 4488
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