Navigation Links

In sperm cells of many higher animals, the acrosome develops over the anterior half of its head. It is a cap-like structure derived from the Golgi apparatus. In Eutherian mammals, acrosome formation is completed during testicular maturation. The acrosome contains digestive enzymes (including hyaluronidase and acrosin) needed to penetrate the zona pellucida covering the ovum.

Acrosome reaction

When the sperm comes in contact with ZP3 in the zona pellucida, this reaction takes place, during which actin polymerizes to form the acrosomal process; also, the acrosomal vesicle fuses with the plasma membrane of the egg cell, and digestive enzymes are released from the sperm to digest the zona pellucida and give access to the egg.

See also


(Date:5/24/2016)... superior patient care by providing unparalleled technology to leaders of the medical imaging industry. ... recently added to the range of products distributed by Ampronix. Photo - ... ... ... ...
(Date:5/3/2016)... , May 3, 2016  Neurotechnology, a provider ... MegaMatcher Automated Biometric Identification System (ABIS) , ... multi-biometric projects. MegaMatcher ABIS can process multiple complex ... any combination of fingerprint, face or iris biometrics. ... SDK and MegaMatcher Accelerator , which ...
(Date:4/19/2016)... UAE, April 20, 2016 The ... as a compact web-based "all-in-one" system solution for all ... fingerprint reader or the door interface with integration authorization ... access control systems. The minimal dimensions of the access ... into the building installations offer considerable freedom of design ...
Breaking Biology News(10 mins):
Other biology definition