a cap over the nucleus of spermatozoan heads having enzymes involved in sperm penetration of the egg and possibly fusion of egg and sperm. Absent in most Teleostei

Dictionary of ichthyology. 2009.

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  • acrosome — [ akrozom ] n. m. • 1904; all. Akrosoma 1898; de acro et some ♦ Biol. Organite situé à l extrémité antérieure des spermatozoïdes. ● acrosome nom masculin Extrémité antérieure différenciée du spermatozoïde. acrosome n. m. BIOL Organite sécrété… …   Encyclopédie Universelle

  • acrosome — acrosome. См. идиосома. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • acrosome — [ak′rə sōm΄] n. a thin sac usually at the head of a sperm cell containing enzymes which dissolve the protective layers of an egg cell acrosomal adj …   English World dictionary

  • Acrosome — In spermatozoa (also known as sperm/sperm cell) of many animals, the Acrosome is an organelle that develops over the anterior half of the sperm s head. It is a cap like structure derived from the Golgi apparatus. Acrosome formation is completed… …   Wikipedia

  • Acrosome — L’acrosome est un organite dont la membrane enveloppe partiellement le noyau du spermatozoïde. Celle ci se forme à partir des vésicules golgiennes (appareil de Golgi) lors de la spermiogenèse (passage de la spermatide ronde à la spermatide… …   Wikipédia en Français

  • acrosome — A caplike organelle or saccule derived from the golgi that surrounds the anterior two thirds of the nucleus of a sperm cell. Within this cap are enzymes that are thought to facilitate entry of the sperm through the zona pellucida. [acro + G. soma …   Medical dictionary

  • acrosome — n. the caplike structure on the front end of a spermatozoon. It breaks down just before fertilization (the acrosome reaction), releasing a number of enzymes that assist penetration between the follicle cells that still surround the ovum. Failure… …   The new mediacal dictionary

  • acrosome — akrosoma statusas T sritis augalininkystė apibrėžtis Spermio galvutės priekyje esantis lazdelės pavidalo darinys. atitikmenys: angl. acrosome rus. акросома …   Žemės ūkio augalų selekcijos ir sėklininkystės terminų žodynas

  • acrosome — noun Etymology: International Scientific Vocabulary Date: 1899 an anterior prolongation of a spermatozoon that releases egg penetrating enzymes • acrosomal adjective …   New Collegiate Dictionary

  • acrosome — n. [Gr. akros, tip; soma, body] A cap like structure investing the front part of the sperm head allowing penetration of the cover of the egg cell; formed from Golgi material …   Dictionary of invertebrate zoology

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