acrosomal reaction


Acrosomal Reaction

A necessary and irreversible step in fertilisation, which is triggered by a sperm receptor, in which the sperm’s and ovum’s plasma membranes fuse and the sperm penetrates the ovum’s zona pellucida.

acrosomal reaction

Reproductive medicine A necessary and irreversible step in fertilization which is triggered by sperm receptor, in which the sperm's and ovum's plasma membranes fuse and the sperm penetrates the zona pellucida. Cf Capacitation.

acrosomal reaction

(ak″rŏ-sō′măl) The release of enzymes from the acrosome on the head of the sperm. This process causes the sperm to penetrate the zona pellucida of the egg and begin fertilization.