Knowledge Tree
Relations (1)
related 3.91 — strongly supporting 14 facts
The corpus luteum is essential for early pregnancy as it secretes progesterone to maintain the uterine lining {fact:1, 2, 3}, and its survival is dependent on signals like hCG produced during pregnancy {fact:3, 10}. Conversely, in the absence of pregnancy, the corpus luteum undergoes degradation, leading to menstruation {fact:4, 5, 6, 7, 8, 12, 13}.
Facts (14)
Sources
Reproductive Hormones endocrine.org 3 facts
claimThe placenta secretes progesterone after it develops, which supports the corpus luteum and maintains elevated progesterone levels throughout pregnancy to prevent the production of additional eggs.
claimThe corpus luteum breaks down if a woman does not become pregnant, which lowers progesterone levels and triggers menstruation.
claimRelaxin is a hormone secreted in the ovary by the corpus luteum, and during pregnancy, it is also released by the placenta and the uterine lining.
Understanding the Phases of the Menstrual Cycle - Clue helloclue.com 3 facts
measurementIf pregnancy does not occur, the corpus luteum breaks down after about 9-11 days.
claimDuring the luteal phase of the ovarian cycle (which corresponds to the secretory phase of the uterine cycle), the corpus luteum forms and releases hormones to prepare for a possible pregnancy.
claimAfter ovulation, the empty follicle transforms into the corpus luteum, which produces progesterone and some estrogen to support a potential pregnancy.
The Normal Menstrual Cycle and the Control of Ovulation - NCBI - NIH ncbi.nlm.nih.gov 3 facts
claimIf the corpus luteum is not rescued by pregnancy, it undergoes atresia, and the resulting progesterone withdrawal causes menses.
claimIf pregnancy does not occur, the corpus luteum undergoes luteolysis under the influence of estradiol and prostaglandins and forms scar tissue called the corpus albicans.
claimIn the absence of pregnancy, steroid hormone levels fall due to declining corpus luteum function, and progesterone withdrawal results in increased coiling and constriction of the spiral arterioles, leading to menstruation.
4 Phases of Menstrual Cycle: Hormone Changes Chart - Liv Hospital int.livhospital.com 1 fact
claimIf pregnancy does not occur, the corpus luteum breaks down, leading to a decrease in estrogen and progesterone levels, which initiates the start of a new menstrual cycle.
Follicular Phase Of Menstrual Cycle - Cleveland Clinic my.clevelandclinic.org 1 fact
claimThe corpus luteum produces pregnancy hormones; if pregnancy does not occur, the corpus luteum disappears and the uterus lining is shed during menstruation.
Understanding the Menstrual Cycle: A Breakdown of Its Four Phases raleighob.com 1 fact
claimIf an egg is fertilized and implants, the body produces human chorionic gonadotropin (hCG), which signals the corpus luteum to continue secreting progesterone to maintain the uterine lining and support early pregnancy.
The Menstrual Cycle | Patient Education - UCSF Health ucsfhealth.org 1 fact
measurementIf pregnancy occurs, the corpus luteum produces progesterone until approximately 10 weeks of gestation.
Unknown source 1 fact
claimCorpus luteum function declines by the end of the luteal phase unless human chorionic gonadotropin (hCG) is produced due to pregnancy.