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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Fertilisation — This article is about fertilisation in animals and plants. For fertilisation in humans specifically, see Human fertilization. For Soil improvement, see Fertiliser. Conceive redirects here. For the health magazine, see Conceive magazine. For… … Wikipedia
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
scruin — Actin binding protein found associated with the acrosomal process of Limulus polyphemus sperm. Scruin holds the microfilaments of the core process in a strained configuration so that the process is coiled. The myosin binding sites on the… … Dictionary of molecular biology
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
Vesicle — In dermatology, a vesicle is a small blister, as on the skin. Vesicles also occur on the mucous membranes, such as the buccal mucosa (the lining of the mouth). Vesicles are less than .5 centimeters in diameter.In anatomy, a vesicle is any small… … Medical dictionary
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
Dihydrolipoamide dehydrogenase — PDB rendering based on 1zy8 … Wikipedia
Cyclic nucleotide-gated ion channel — Cyclic nucleotide gated (CNG) ion channels are ion channels that function in response to the binding of cyclic nucleotides. CNG channels are nonselective cation channels that are found in the membranes of various types of cells. Signal… … Wikipedia