acrosome

(redirected from Acrosomal process)
Also found in: Dictionary, Thesaurus, Medical.

acrosome

[′ak·rə‚sōm]
(cell and molecular biology)
The anterior, crescent-shaped body of spermatozoon, formed from Golgi material of the spermatid. Also known as perforatorium.
References in periodicals archive ?
The exocytosis of acrosomal lysins and the extension of an acrosomal process (or its equivalent as in chitons [Buckland-Nicks et al.
Elongation of the anterior tip of the acrosome is distinct from an "acrosome reaction," as there is no eversion of the inner acrosomal membrane or protrusion of the subacrosomal space by an acrosomal process (Sato and Osanai, 1983).
To find the retardance of a single actin filament, we divided the measured retardance of the acrosomal process by its number of actin filaments (80).
Paul and Gould-Somero (1976) found that the acrosomal process of supernumerary sperm penetrated through the vitelline coat into the perivitelline space of the fertilized oocyte, but sperm could not fuse with the oocyte plasma membrane.
1972), and a distinct acrosomal process is produced de novo following the acrosomal exocytosis at the anterior end of the sperm (Holland et al.
Specificity of fertilization in crosses between several genera of urchins has been shown to result mainly from "primary gamete binding," the attachment of the sperm acrosomal process to the egg vitelline layer, visualized by electron microscopy (Summers and Hylander, 1975).