Akademik

Ovulation

The release of the ripe egg from the ovary. The egg is released when the cavity surrounding it (the follicle) breaks open in response to a hormonal signal. Ovulation occurs around fourteen or fifteen days from the first day of the woman’s last menstrual cycle. When ovulation occurs, the ovum moves into the fallopian tube and becomes available for fertilization.

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Release of an ovum from the ovarian follicle.

- anestrous o. discharge of ova occurring in animals without estrus.

- paracyclic o. obsolete term for o. occurring in the menstrual cycle at any time other than the normally anticipated time.

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ovu·la·tion .äv-yə-'lā-shənalso .ōv- n the discharge of a mature ovum from the ovary

ovu·late 'äv-yə-.lātalso 'ōv- vi, -lat·ed; -lat·ing

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the process by which an ovum is released from a mature Graafian follicle. The fluid-filled follicle distends the surface of the ovary until a thin spot breaks down and the ovum floats out surrounded by a cluster of follicle cells (the cumulus oophoricus) and starts to travel down the Fallopian tube to the uterus. Ovulation is stimulated by the secretion of luteinizing hormone by the anterior pituitary gland.

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ovu·la·tion (ov″u-laґshən) the discharge of a secondary oocyte from a vesicular ovarian follicle. ovulatory adj

Ovulation.

Medical dictionary. 2011.