Knowledge Tree
Relations (1)
related 4.81 — strongly supporting 27 facts
Luteinizing hormone (LH) is the primary hormonal trigger for ovulation, as evidenced by the surge in LH that causes the release of a mature egg from the ovary [1], [2], and [3]. The relationship is further defined by the temporal proximity of these events, with ovulation occurring approximately 10-12 hours after the LH peak [4], [5].
Facts (27)
Sources
The Normal Menstrual Cycle and the Control of Ovulation - NCBI - NIH ncbi.nlm.nih.gov 11 facts
claimIn most women, the Luteinizing hormone (LH) pulse amplitude begins to increase after ovulation occurs.
measurementOvulation occurs approximately 10-12 hours after the luteinizing hormone (LH) peak.
claimDuring the late follicular phase prior to ovulation, the pulse frequency of Luteinizing hormone (LH) increases and the pulse amplitude may begin to increase.
claimIn most women, the Luteinizing hormone (LH) pulse amplitude begins to increase after ovulation takes place.
referenceA 1978 study published in the American Journal of Obstetrics and Gynecology examined the temporal relationships of estrogen, progesterone, and luteinizing hormone levels to ovulation in women and infrahuman primates.
measurementOvulation occurs approximately 10-12 hours after the luteinizing hormone (LH) peak.
claimSpontaneous luteinization of granulosa cells can occur in the absence of luteinizing hormone (LH), suggesting that inhibitory factors like oocyte maturation inhibitor or luteinization inhibitor are overcome at ovulation.
claimDuring the late follicular phase prior to ovulation, the pulse frequency of Luteinizing hormone (LH) secretion increases and the amplitude may begin to increase.
claimSpontaneous luteinization of granulosa cells can occur in the absence of luteinizing hormone (LH), leading to the hypothesis that inhibitory factors like oocyte maturation inhibitor or luteinization inhibitor are overcome at ovulation.
measurementThe beginning of the luteinizing hormone (LH) surge occurs roughly 34 to 36 hours prior to ovulation.
claimAfter ovulation, the amount of progesterone secreted and the length of the luteal phase are dependent on repeated Luteinizing hormone (LH) injections.
Understanding the Menstrual Cycle: A Breakdown of Its Four Phases raleighob.com 3 facts
claimDuring the early follicular phase, rising estrogen levels suppress luteinizing hormone to ensure the body's preparation for ovulation is gradual.
claimFollowing ovulation, luteinizing hormone levels decrease but remain essential to support the activity of the corpus luteum.
claimJust before ovulation, the body experiences a sharp rise in luteinizing hormone (LH) and a smaller rise in estrogen, which triggers the release of a mature egg from the dominant follicle.
Understanding the Phases of the Menstrual Cycle - Clue helloclue.com 3 facts
claimA sudden surge in luteinizing hormone (LH) triggers the release of the egg during ovulation.
claimA sudden surge in luteinizing hormone (LH) triggers the release of the egg during ovulation, and estrogen levels drop immediately after this event.
claimDuring ovulation, a sudden surge in luteinizing hormone (LH) triggers the release of an egg from the dominant follicle into the fallopian tube.
4 Phases of Menstrual Cycle: Hormone Changes Chart - Liv Hospital int.livhospital.com 2 facts
Female Reproductive Endocrinology - Gynecology and Obstetrics merckmanuals.com 2 facts
claimLuteinizing hormone (LH) and follicle-stimulating hormone (FSH) promote ovulation and stimulate the ovaries to secrete the sex hormones estradiol (an estrogen) and progesterone.
claimLuteinizing hormone (LH) and follicle-stimulating hormone (FSH) promote ovulation in the female reproductive system.
Which hormones are present in men + women? - MITOcare mitocare.de 1 fact
claimAfter ovulation is triggered by luteinizing hormone (LH), the mature egg moves into the fallopian tube and produces progesterone, which prepares the uterine lining for the implantation of a fertilized egg.
Follicular Phase Of Menstrual Cycle - Cleveland Clinic my.clevelandclinic.org 1 fact
claimHigh estrogen levels toward the end of the follicular phase trigger the pituitary gland to release a surge of luteinizing hormone (LH), which causes the mature egg to be released from the follicle and ovary during ovulation.
Menstrual Cycle (Normal Menstruation): Overview & Phases my.clevelandclinic.org 1 fact
claimOvulation occurs roughly at day 14 of a 28-day menstrual cycle, triggered by a sudden increase in luteinizing hormone (LH) which causes the ovary to release an egg.
The Menstrual Cycle: How It Changes as You Age | Mount Sinai Today health.mountsinai.org 1 fact
procedureThe menstrual cycle proceeds in five steps: (1) The pituitary gland produces FSH, which signals the ovaries to produce estrogen. (2) When estrogen reaches a specific level for a set duration, the pituitary gland produces LH. (3) LH triggers ovulation, causing the ovary to release an egg into the fallopian tube. (4) The ovary produces progesterone to prepare the uterus for pregnancy. (5) If conception does not occur, hormone levels drop, the menstrual lining stops developing, and the lining is shed as a menstrual period.
Hormones & desire - American Psychological Association apa.org 1 fact
referenceIn a 2007 study published in 'Hormones and Behavior' (Vol. 51, No. 1), 40 judges rated photos of 30 women taken during their luteinizing hormone (LH) surge (ovulation) versus their non-fertile luteal phase to determine if they were trying to look attractive.
The Menstrual Cycle | Patient Education - UCSF Health ucsfhealth.org 1 fact
claimLuteinizing hormone (LH), produced by the pituitary gland, aids in egg maturation and provides the hormonal trigger to cause ovulation and the release of eggs from the ovary.