acrosomal process
A long process actively protruded from the acrosomal region of the spermatozoon following contact with the egg and that assists penetration of the gelatinous capsule.

Dictionary of molecular biology. 2004.

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  • Acrosome reaction — During fertilization, the acrosome reaction is the reaction which occurs in the acrosome of the sperm as it approaches the egg. The acrosome is a cap like structure over the anterior half of the sperm s head.As the sperm approaches the zona… …   Wikipedia

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  • actomere — Site of actin filament nucleation in sperm of some echinoderms in which the acrosomal process is protruded by rapid assembly of a parallel microfilament bundle …   Dictionary of molecular biology

  • fertilization — fertilizational, adj. /ferr tl euh zay sheuhn/, n. 1. an act, process, or instance of fertilizing. 2. the state of being fertilized. 3. Biol. a. the union of male and female gametic nuclei. b. fecundation or impregnation of animals or plants. 4.… …   Universalium

  • Spermiogenesis — is the final stage of spermatogenesis which sees the maturation of spermatids into mature, motile spermatozoa.PhasesThe process of spermiogenesis is traditionally divided into four stages: the Golgi phase, the cap phase, the acrosomal phase, and… …   Wikipedia

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  • capacitation — C. is a process whereby the glycoprotein coat is modified and seminal proteins are removed from the surface of the sperm. There are no morphologic changes. C. occurs in in vitro fertilization; after c., the acrosomal reaction can occur. [L.… …   Medical dictionary

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