Canadian Medical Guide > Biological Sciences > Reproductive and Urinary Physiology > Reproduction > Menstrual Cycle > Ovulation Terms and Definitions

Ovulation

Medical Definition:

The discharge of an OVUM from a rupturing Graafian follicle. Ovulation is regulated by a surge release of LUTEINIZING HORMONE.

Ovulation Categories.

	Luteinization - Formation of CORPUS LUTEUM. This process includes capillary invasion of the ruptured OVARIAN FOLLICLE, hypertrophy of the GRANULOSA CELLS and the THECA CELLS, and the production of PROGESTERONE. Luteinization is regulated by LUTEINIZING HORMONE.
	Luteolysis - Degradation of CORPUS LUTEUM. In the absence of pregnancy and diminishing trophic hormones, the corpus luteum undergoes luteolysis which is characterized by the involution and cessation of its endocrine function.

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