0
When the placenta is fully formed, it takes over hormone production—especially progesterone and estrogen — which means the corpus luteum is no longer needed. In early pregnancy, the corpus luteum produces progesterone under the support of hCG to maintain the uterine lining. But by about week 8–12, the placenta becomes mature enough to sustain those hormone levels on its own, so hCG’s role in supporting the corpus luteum fades, and the luteal‑placental shift happens: progesterone from the corpus luteum declines and is replaced by placental secretion. As a result, the corpus luteum gradually degenerates into scar tissue (corpus albicans) since its job is done.
What else can I help you with?
Maintenance of pregnancy by corpus luteum and placenta?
Lutenizing Hormone
Why is the corpus luteum important to reproduction?
The corpus luteum produces progesterone during the time that the placenta is forming, about the first trimester. After the placenta is mature, it will continue to produce progesterone while the corpus luteum degenerates. Progesterone is an important pregnancy hormone. Pregnancy cannot continue without it.
What follicular structure forms immediately post ovulation?
The corpus luteum is the follicular structure that forms immediately post-ovulation. It is responsible for producing progesterone to prepare the uterus for potential implantation. If fertilization does not occur, the corpus luteum will degenerate, leading to a decrease in hormone levels and the start of a new menstrual cycle.
Why does the corpus luteum not stop producing its hormones when fertilization has occurred?
The corpus luteum continues to produce hormones (progesterone) even after fertilization to support early pregnancy until the placenta takes over hormone production. This is essential for maintaining the uterine lining for the implantation and development of the embryo. If fertilization does not occur, the corpus luteum will degenerate, leading to a drop in hormone levels and the start of menstruation.
How the level of a hormone which prevents menstruation remains high during pregnancy even after the corpus luteum has broken down?
Progesterone is the hormone that prevents menstruation and maintain pregnancy. It is initially produced by the corpus luteum. After the corpus luteum has broken down, the placenta takes over the production of progesterone from the 8th week of pregnancy until birth. Therefore, it is the placenta which keeps the level of the hormone (progesterone) high throughout pregnancy.
Yellow body formed from a broken follicle that fills with cells?
corpus luteum
What organ secretes the hormones progesterone?
The ovaries are the main organ that secretes the hormone progesterone. It is primarily produced by the corpus luteum, which forms after ovulation. Progesterone plays a key role in the menstrual cycle and pregnancy.
Could a women still be pregnant even tho her blood test was negative and she still gets her period?
No. Having your period is the deterioration of your corpus luteum. The corpus luteum is the site from which an egg cell is ovulated. After ovulation the corpus luteum forms under the influence of LH and begins to secrete progesterone. Progesterone maintains blood flow to the uterine wall and is needed to maintain pregnancy should it occur. If the egg is not fertilized and/or does not implant in the uterine wall, the corpus luteum will degenerate into scar tissue called corpus albicans.
What prevents the breakdown of the corpus luteum?
The hormone human chorionic gonadotropin (hCG) helps maintain the corpus luteum during early pregnancy by signaling to the ovary to continue producing progesterone. This is important for supporting the early stages of pregnancy until the placenta is fully developed and can take over hormone production. If the corpus luteum breaks down before the placenta is capable of producing enough hormones, it can lead to a miscarriage.
How does the corpus luteum affect the menstrual cycle?
The corpus luteum is the area from which the mature egg broke free from the ovary during ovulation. The corpus luteum produces progesterone which is responsible for the uterine lining build-up.
What are the remains of the graafian follicle after ovulation?
It becomes the corpus luteum.
What does regressing corpus luteum indicate?
A regressing corpus luteum indicates that the egg was not fertilized. As the corpus luteum regresses it loses its capacity to produce progesterone. A regressed corpus luteum is termed as corpus albicans. The lack of progestorone, which leads to the shedding of the uterine lining, is responsible for the menstrual cycle.
