Ženski polni organ, ženska spolna žlezda, paran organ, oblika i veličine badema. Smešten je u jamici na spoljašnjem zidu karlične duplje. Ima dvostruku ulogu: stvara ženske spolne ćelije (jaja), deluje kao žlezda sa unutrašnjim lučenjem. Počev od 12. do 45. godine života u jajniku sazrevaju jaja. Proces sazrevanja jajeta i njegovo izbavicanje iz jajnika naziva se ovulacija i događa se cikllično u sredini između dve menstruacije. Hormoni jajnika deluju na sluznicu materice i na održanje ploda u njoj tokom trudnoće. Bez oba jajnika žena je neplodna..
jaja sa slaninom · jajast · jajasta šljiva · jaja u prahu · jaje · jaje na oko · jajna ćelija · jajne ćelije · jajnik · jajovod · jajoglav · jajolik · jajonosan · jablan · jabuka · jabuka za kuvanje
ETYM Greek gonos that which generates.
Sexual gland; ovary or testis.
One of the masses of generative tissue primitively alike in both sexes, but giving rise to either an ovary or a testis; a generative gland; a germ gland.
The part of an animal's body that produces the sperm or egg cells (ova) required for sexual reproduction. The sperm-producing gonad is called a testis, and the egg-producing gonad is called an ovary.
Synonyms: sex gland
Ovary.
ETYM New Lat. ovarium, from Latin ovum egg: cf. French ovaire. Related to Oval.
1. One of usually two organs that produce ova and (in vertebrates) secrete estrogen and progesterone.
2. The organ that bears the ovules of a flower.
Female egg-producing organ.
In female animals, the organ that generates the ovum. In humans, the ovaries are two whitish rounded bodies about 25 mm/1 in by 35 mm/1.5 in, located in the lower abdomen to either side of the uterus. Every month, from puberty to the onset of the menopause, an ovum is released from the ovary. This is called ovulation, and forms part of the menstrual cycle. In botany, an ovary is the expanded basal portion of the carpel of flowering plants, containing one or more ovules. It is hollow with a thick wall to protect the ovules. Following fertilization of the ovum, it develops into the fruit wall or pericarp.
The ovaries of female animals secrete the hormones responsible for the secondary sexual characteristics of the female, such as smooth, hairless facial skin and enlarged breasts. An ovary in a half-grown human fetus contains 5 million eggs, and so the unborn baby already possesses the female genetic information for the next generation.
In botany, the relative position of the ovary to the other floral parts is often a distinguishing character in classification; it may be either inferior or superior, depending on whether the petals and sepals are inserted above or below.