ovulation

Also known as GO:0030728

Ovulation is an important part of the menstrual cycle in female vertebrates where the egg cells are released from the ovaries as part of the ovarian cycle. In female humans ovulation typically occurs near the midpoint in the menstrual cycle and after the follicular phase. Ovulation is stimulated by an increase in luteinizing hormone (LH). The ovarian follicles rupture and release the secondary oocyte ovarian cells.

AI overview

Ovulation is the release of egg cells from the ovaries, a key part of the menstrual cycle that typically happens around the middle of the cycle in women. This process, triggered by a surge in luteinizing hormone, is important because it makes pregnancy possible by releasing the egg that can be fertilized.

AI-generated from the Wikipedia summary — may contain errors.

Key facts

Anatomy.Name: Ovulation
Anatomy.Image: Figure 28 00 01.JPG
Anatomy.Caption: Following a surge of luteinizing hormone (LH), an oocyte (immature egg cell) will be released into the uterine tube, where it will then be available to be fertilized by a male's sperm within 12 hours. Ovulation marks the end of the follicular phase of the ovarian cycle, and the start of the luteal phase.
Anatomy.Width: 250

via Wikipedia infobox

Research

64,083 papers

New insights of the role of β-NGF in the ovulation mechanism of induced ovulating species.ReviewReproduction (Cambridge, England) · 2019Ratto MH, Berland M, Silva ME et al.DOI: 10.1530/REP-18-0305
Spontaneous ovulation in the cat: incidence among queens presented at a veterinary teaching facility.Journal of feline medicine and surgery · 2024Pereira MC, Schrank M, Mollo A et al.DOI: 10.1177/1098612X241248351
Kisspeptin induces LH release and ovulation in an induced ovulator†.Biology of reproduction · 2020Carrasco RA, Leonardi CE, Hutt K et al.DOI: 10.1093/biolre/ioaa051
Ovulation failure and double ovulation in dairy cattle: risk factors and effects.Theriogenology · 2005López-Gatius F, López-Béjar M, Fenech M et al.DOI: 10.1016/j.theriogenology.2004.06.010
Stress-related cortisol and progesterone concentrations influence the success of ovulation induction in estrous cats.Theriogenology · 2026Ozturk B, Cetinkaya YB, Ayalp-Erkan A et al.DOI: 10.1016/j.theriogenology.2026.117849
Incidence of double ovulation during the early postpartum period in lactating dairy cows.Theriogenology · 2017Kusaka H, Miura H, Kikuchi M et al.DOI: 10.1016/j.theriogenology.2016.12.029
Transition cow metabolites and physical traits influence days to first postpartum ovulation in dairy cows.Theriogenology · 2021Banuelos S, Stevenson JSDOI: 10.1016/j.theriogenology.2021.08.002
Luteinizing hormone requirements for ovulation in the pentobarbital-treated proestrous rat.Endocrinology · 1976Gosden RG, Everett JW, Tyrey LDOI: 10.1210/endo-99-4-1046

via PubMed

Wikidata facts

Show 2 more facts

Commons category: Ovulation
exact match: purl.obolibrary.org/obo/GO_0030728

Sources (5)

via Wikidata · CC0

~12 min read

Article

13 sections

Contents

Process
Follicular phase
Ovulation
Luteal phase
Clinical presentation
Disorders
Ovulation induction
Ovulation suppression
Fertility and timing of ovulation
See also
Notes
Further reading
External links

After ovulation, during the luteal phase, the egg will be available to be fertilized by sperm. If it is not, it will break down in less than a day. Meanwhile, the uterine lining (endometrium) continues to thicken to be able to receive a fertilized egg. If no conception occurs, the uterine lining will eventually break down and be shed from the body via the vagina during menstruation.