(ak-ruh-some) An organelle at the tip of a sperm cell that helps the sperm penetrate the egg.

Refers to the small cap that covers the head of sperm.

The enzyme-filled cap on the head of a sperm. Used in egg penetration. actin

  An apical organelle in the head of a spermatozoon, q.v.

  The cap-like structure structure investing the anterior portions of the head of spermatozoa.

(n) a process at the anterior end of a sperm cell that produces enzymes to facilitate penetration of the egg

The acrosome, also known as the acrosomal cap, is a helmet-like structure which covers the front section of the head portion of a sperm cell. It contains a compartment of enzymes which develops during [..]

The cap-like structure covering the anterior portion of Sperm Head. Acrosome, derived from Lysosomes, is a Membrane-bound Organelle that contains the required hydrolytic and Proteolytic Enzymes necess [..]

The cap-like structure covering the anterior portion of SPERM HEAD. Acrosome, derived from LYSOSOMES, is a membrane-bound organelle that contains the required hydrolytic and proteolytic enzymes necess [..]

<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 (12 Mar 1998)

A protrusion on the anterior end of a sperm cell containing digestive enzymes that enable the sperm to penetrate layers around the oocyte.

A small ‘cap’ overlaying the sperm head.