graafian follicle

graafian follicle
graaf·ian follicle .gräf-ē-ən-, .graf- n, often cap G a mature follicle in a mammalian ovary that contains a liquid-filled cavity and that ruptures during ovulation to release an egg called also vesicular ovarian follicle
de Graaf də-'gräf Reinier (1641-1673)
Dutch physician and anatomist. De Graaf is regarded as one of the creators of experimental physiology. In 1672 he produced a treatise on the female reproductive organs that is considered one of the seminal works of biology. De Graaf demonstrated ovulation anatomically, pathologically, and experimentally. The treatise contains the description of the structures now known in English as the graafian follicles. The Swiss anatomist Albrecht von Haller (1708-1777) named them after de Graaf. In 1827 the German embryologist Karl Ernst von Baer (1792-1876) discovered that although the graafian follicles contain the eggs from which organisms develop, they are not the eggs themselves.

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a mature follicle in the ovary prior to ovulation, containing a large fluid-filled cavity that distends the surface of the ovary. The oocyte develops inside the follicle, attached to one side.
R. de Graaf (1641-73), Dutch physician and anatomist

Medical dictionary. 2011.

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Look at other dictionaries:

  • Graafian follicle — or Graafian vesicle [graf′ē ən, gräf′ē ən] n. [after R. de Graaf (1641 73), Du anatomist] any of the small, round, fluid filled sacs in the ovary of higher mammals, each of which contains a maturing ovum surrounded by hormone secreting cells …   English World dictionary

  • Graafian follicle — Graafian follicle. См. Граафов пузырек. (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.

  • Graafian follicle — a mature follicle in the ovary prior to ovulation, containing a large fluid filled cavity that distends the surface of the ovary. The oocyte develops inside the follicle, attached to one side [de Graaf (1641–73), Dutch physician and anatomist] …   The new mediacal dictionary

  • Graafian follicle — /ˌgrafiən ˈfɒlɪkəl/ (say .grahfeeuhn folikuhl) noun one of many small vesicles within the ovary which, at the time of ovulation, discharge an ovum. Also, Graafian vesicle. {named after R de Graaf, 1641–73, Dutch anatomist} …  

  • Graafian follicle — noun A mature ovarian follicle at the final stage of folliculogenesis …   Wiktionary

  • Graafian follicle — n. a follicle in the mammalian ovary in which an ovum develops prior to ovulation. Etymology: R. de Graaf, Du. anatomist d. 1673 …   Useful english dictionary

  • graafian follicle — noun Usage: often capitalized G Etymology: Regnier de Graaf died 1673 Dutch anatomist Date: 1883 a mature liquid filled cavity in a mammalian ovary that ruptures during ovulation to release an egg …   New Collegiate Dictionary

  • Graafian follicle — Final stage in the differentiation of follicles in the mammalian ovary. Consists of a spherical fluid filled blister on the surface of the ovary that bursts at ovulation to release the oocyte …   Dictionary of molecular biology

  • Graafian follicle — /grah fee euhn/, (sometimes l.c.) one of the small vesicles containing a developing ovum in the ovary of a mammal. [1835 45; named after Regnier de Graaf (d. 1673), Dutch anatomist; see IAN] * * * …   Universalium

  • Graafian follicle — [ grα:fɪən] noun Physiology a fluid filled structure in the ovary within which an ovum develops prior to ovulation. Origin C19: named after the 17th cent. Dutch anatomist R. de Graaf …   English new terms dictionary

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