ovarian cycle


Also found in: Dictionary, Thesaurus, Financial, Encyclopedia, Wikipedia.
Related to ovarian cycle: menstrual cycle

cycle

 [si´k'l]
a succession or recurring series of events.
cardiac cycle a complete cardiac movement, or heart beat, including systole, diastole, and the intervening pause.
Cardiac cycle. From Applegate, 2000.
cell cycle the cycle of biochemical and morphological events occurring in a reproducing cell population; it consists of the S phase, occurring toward the end of interphase, in which DNA is synthesized; the G2 phase, a relatively quiescent period; the M phase, consisting of the four phases of mitosis; and the G1 phase of interphase, which lasts until the S phase of the next cycle.
citric acid cycle tricarboxylic acid cycle.
estrous cycle the recurring periods of estrus in adult females of most mammalian species and the correlated changes in the reproductive tract from one period to another.
hair cycle the successive phases of the production and then loss of hair, consisting of anagen, catagen, and telogen.
menstrual cycle see menstrual cycle.
ovarian cycle the sequence of physiologic changes in the ovary involved in ovulation; see also ovulation and reproduction.
reproductive cycle the cycle of physiologic changes in the reproductive organs, from the time of fertilization of the ovum through gestation and childbirth; see also reproduction.
sex cycle (sexual cycle)
1. the physiologic changes that recur regularly in the reproductive organs of nonpregnant female mammals.
2. the period of sexual reproduction in an organism that also reproduces asexually.
tricarboxylic acid cycle the cyclic metabolic mechanism by which the complete oxidation of the acetyl portion of acetyl-coenzyme A is effected; the process is the chief source of mammalian energy, during which carbon chains of sugars, fatty acids, and amino acids are metabolized to yield carbon dioxide, water, and high-energy phosphate bonds. Called also citric acid cycle, Krebs cycle, and TCA cycle.
 Central pathways of metabolism: How the body produces energy from the energy-containing nutrients using the tricarboxylic acid cycle. From Davis and Sherer, 1994.
urea cycle a cyclic series of reactions that produce urea; it is a major route for removal of the ammonia produced in the metabolism of amino acids in the liver and kidney.

o·var·i·an cy·cle

the normal sex cycle that includes development of an ovarian (graafian) follicle, rupture of the follicle with discharge of the ovum, and formation and regression of a corpus luteum.

o·var·i·an cy·cle

(ō-var'ē-ăn sī'kĕl)
The normal sex cycle that includes development of an ovarian (graafian) follicle, rupture of the follicle with discharge of the ovum, and formation and regression of a corpus luteum.
References in periodicals archive ?
Hence, none of those chemicals alone was able to induce a significant disruption of the ovarian cycle. Figure 3 places those chemicals on a map with the slope W of the Hill dose-response curve at A[C.sub.50] and the log-margin of exposure as coordinates.
The ovarian cycle histochemistry and its relationship with hepatopancreas weight in the blue crab Callinectes danae (Crustacea: Portunidae).
In general, the estrogenic portion of the ovarian cycle prepares the tract for receiving spermatozoa and fertilization, whereas the progesterone-dominated portion of the cycle prepares the tract for receiving and nurturing the embryo.
Alterations in platelet function during the ovarian cycle. Blood Coagul Fibrinolysis.
Macaque models have been useful specifically for research on ovarian cycle control, endometriosis, anovulatory infertility, osteoporosis, stress-associated infertility, menopausal changes in physiology, and related metabolic disorders (Weinbauer et al., 2008).
Ovarian cycle of Crotaphytus collaris (Reptilia, Lacertilia, Iguanidae) from Arkansas with emphasis on corpora albicantia, follicular atresia, and reproductive potential.
Monthly stages in the ovarian cycle of 43 Hoihrookia elegans from Santa Cruz County, Arizona (n = 4), Hidalgo County.
The final stages of oogenesis and folliculogenesis occur in the adult during the follicular phase of the ovarian cycle. Oogenesis begins in the fetal ovary when the primordial germ cells enter the gonad and become oogonia.
The immune response during the luteal phase of the ovarian cycle: a Th2 response.
Table II.- Classification of annual ovarian cycle and maturing stages of female Catla catla between the age of 18-29 months.
Recruitment of follicles by recombinant human follicle-stimulating hormone commencing in the luteal phase of the ovarian cycle. Fertil Steril.
Four stages were present in the ovarian cycle (Table 1): (1) quiescent, no yolk deposition present; (2) early yolk deposition, with basophilic yolk granules in the ooplasm; (3) enlarged ovarian follicles > 4 mm diameter; (4) oviductal eggs present in the oviducts.