corpus luteum

corpus luteum
/kawr"peuhs looh"tee euhm/, pl. corpora lutea /kawr"peuhr euh looh"tee euh/.
1. Anat., Zool. a ductless gland developed within the ovary by the reorganization of a Graafian follicle following ovulation.
2. Pharm. an extract of this gland, usually of the hog or cow, the chief product of which is progesterone.
[1780-90; < NL: yellow body]

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      yellow, hormone-secreting body in the female reproductive system. It is formed in an ovary at the site of a follicle, or sac, that has matured and released its ovum, or egg. The “yellow body” secretes progesterone, a hormone that causes changes in the uterus that make it more suitable for implantation of the fertilized ovum and the nourishment of the embryo. If the egg is not fertilized, the corpus luteum becomes inactive after 10–14 days and menstruation occurs. See also ovary; ovulation.

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  • Corpus luteum — x Section of the ovary. 1. Outer covering. 1’. Attached b …   Wikipedia

  • corpus luteum — corpus lu·te·um lüt ē əm, lü tē əm n, pl corpora lu·tea ə a yellowish mass of progesterone secreting endocrine tissue that consists of pale secretory cells derived from granulosa cells, that forms immediately after ovulation from the ruptured… …   Medical dictionary

  • Corpus luteum — Corpus Cor pus ( p[u^]s), n.; pl. {Corpora} ( p[ o]*r[.a]). [L.] A body, living or dead; the corporeal substance of a thing. [1913 Webster] {Corpus callosum} (k[a^]l*l[=o] s[u^]m); pl. {Corpora callosa} ( s?) [NL., callous body] (Anat.), the… …   The Collaborative International Dictionary of English

  • Corpus luteum — Corpus luteum, Gelbkörper, bei Säugern (und lebend gebärenden poikilothermen Wirbeltieren) aus dem Graafschen Follikel nach der Ovulation entstehendes gelbes Drüsengewebe, das Progesteron und Östrogen sezerniert und den Uterus für die Einnistung… …   Deutsch wörterbuch der biologie

  • corpus luteum — [lo͞ot′ē əm] n. pl. corpora lutea [lo͞o′tēə] [ModL, lit., luteous body] 1. Anat. a mass of yellow tissue formed in the ovary by a ruptured graafian follicle that has discharged its ovum: if the ovum is fertilized, this tissue secretes the hormone …   English World dictionary

  • Corpus luteum — Vorgänge im Eierstock während der Eizellenreifung Der Gelbkörper, auch Corpus luteum (von lateinisch corpus „Körper“; luteus „gelb“) genannt, entsteht unter dem Einfluss des luteinisierenden Hormons (LH) nach dem Follikelsprung (Eisprung oder… …   Deutsch Wikipedia

  • corpus luteum — the glandular tissue in the ovary that forms at the site of a ruptured Graafian follicle after ovulation. It secretes the hormone progesterone, which prepares the uterus for implantation. If implantation fails the corpus luteum becomes inactive… …   The new mediacal dictionary

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  • Corpus luteum — Cor|pus lu|te|um [ lu:teum] das; <aus gleichbed. lat. corpus luteum> Gelbkörper des Eierstocks …   Das große Fremdwörterbuch

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