LH - Luteinizing Hormone
Progesterone is the primary hormone produced in the corpus luteum. Secondary is estrogen.
Progesterone is the hormone secreted by the corpus luteum that maintains the uterine lining during the first trimester of pregnancy. It is essential for supporting the growth and development of the embryo.
progesterone
Lutenizing Hormone
The hormone that stimulates the disintegration of the corpus luteum is prostaglandin F2α (PGF2α). Following the failure of fertilization, PGF2α is released, leading to the regression of the corpus luteum, a process known as luteolysis. This decline in corpus luteum activity results in decreased levels of progesterone, which is crucial for maintaining early pregnancy.
Luteinizing Hormone (LH)
corpus luteum
The transformation of the follicle into the corpus luteum is primarily influenced by luteinizing hormone (LH). After ovulation, LH stimulates the remaining cells of the ruptured follicle to differentiate into luteal cells, which form the corpus luteum. Additionally, follicle-stimulating hormone (FSH) plays a supportive role in the early stages of follicle development leading up to ovulation. The corpus luteum then produces progesterone and estrogen, which are essential for maintaining the uterine lining during the early stages of pregnancy.
The hormone progesterone in the corpus luteum will prepare the uterus for pregnancy.
The corpus luteum is formed from the ovary. The pituitary gland increases its production of the second hormone, luteinizing hormone (LH). This second hormone allows the mature egg to rupture from the ovary (called ovulation) and enter into the uterine tube. The postovulatory phase has begun. LH also encourages the formation of a "scar" within the ovary. This "scar" is called the corpus luteum, and it produces the hormone progesterone.
Prostaglandin F2alpha is the hormone responsible for triggering luteolysis, the regression of the corpus luteum in the ovary. This process leads to the cessation of progesterone production in non-pregnant animals.
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.