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Estrous Cycle

Estrous Cycle. Topic 3096 C Amanda Trutsch. Estrus. The period of mating activity in the female mammal Same as heat. Estrous. An adjective meaning “heat”, which modifies such words as cycle Estrous cycle is the heat cycle, or time from one heat to the next. Hormones involved .

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Estrous Cycle

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  1. Estrous Cycle Topic 3096 C Amanda Trutsch

  2. Estrus • The period of mating activity in the female mammal • Same as heat

  3. Estrous • An adjective meaning “heat”, which modifies such words as cycle • Estrous cycle is the heat cycle, or time from one heat to the next

  4. Hormones involved • Gonadotropin-releasing hormone (GnRH) • Source: Hypothalamus • Target: Anterior pituitary • Function: Release LH and FSH

  5. Hormones involved, cont. • Luteinizing hormone (LH) • Source: Anterior pituitary • Target: Ovary • Functions: Ovulation, CL formation, Progesterone production

  6. Hormones involved, cont. • Follicle-stimulating hormone (FSH) • Source: Anterior pituitary • Target: Ovary • Function: Development of follicle

  7. Hormones involved, cont. • Estrogen • Source: Follicle • Target: Uterus • Function: Mating behavior

  8. Hormones involved, cont. • Progesterone • Source: Corpus luteum • Target: Uterus • Function: Maintains pregnancy

  9. Hormones involved, cont. • Prostaglandin (PGF2a) • Source: Uterus • Target: Corpus luteum • Function: Regression of CL

  10. Estrous Cycle http://www.equine-reproduction.com/articles/images/Hormones.gif

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