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Discharge of an ovum or ovule from the ovary.



the discharge of the ovum from the ovary into the body cavity. The follicle that contains the ovum ruptures during ovulation; in humans and mammals it is called the Graafian follicle. Ovulation occurs periodically in females of most vertebrates and in women. In some animals, for example, the rabbit, cat, and polecat, it is triggered by copulation. It is stimulated by gonadotrophic hormones, which are secreted by the pituitary gland and are controlled by the central nervous system. In birds the number of daylight hours is a signal for ovulation; in fish, water temperature.

References in periodicals archive ?
Review of the home/self testing market segments, including diabetes (strips and meters), pregnancy, ovulation and occult blood.
In reproductive medicine, the first line choice for pharmacological ovulation induction is with selective oestrogen receptor modulators, with clomiphene citrate (CC) being the most extensively studied.
Table 2 displays the collective number of patients with follicles >18 mm which was 21; the mean endometrial thickness on the day of ovulation was 7.
Ovulation rates in the lifestyle intervention group and the combination therapy group were significantly higher (60% and 67%, respectively) than in the oral contraceptives (OC) group (46%), Dr.
Just by entering the last two menstruation dates, it will estimate when menstruation and ovulation will occur next.
The opposite was true for women who said their partners were less sexy; they felt less close to their male partners and were more critical of their mate's faults as they approached ovulation.
Describe the hormonal control of ovulation and predict how LH levels change during various days of the cycle.
Adams' team had shown that sperm-free semen injected into llamas' leg muscles could set off ovulation all on its own--no bump-and-grind required.
Contraceptive efficacy of emergency contraception with levonorgestrel given before or after ovulation.
The researchers suspected that when awash with too much circulating insulin, the gonadotrophs of obese mice start pumping out large amounts of LH, thus disrupting ovulation.
The question of whether Plan B can also prevent implantation of a fertilized egg as well as prevent ovulation and inhibit sperm from reaching the egg led the Catholic bishops and four Catholic hospitals of Connecticut to oppose that state's 2007 legislation on emergency contraception unless it allowed hospitals to test for pregnancy and ovulation before administering the drug.