What happens during Luteinization?
Luteinization of the follicle is the process whereby the basement membrane breaks down, resulting in vascularization of the granulosa cells in association with a rapid increase in steroidogenic enzyme capacity, which leads to a rapid rise in progesterone secretion.
What does the word Luteinize mean?
verb (used with object), lu·te·in·ized, lu·te·in·iz·ing. to produce corpora lutea in. to undergo transformation into corpora lutea.
What happens to granulosa cells during Luteinization?
Following ovulation, granulosa cells (GC) undergo a process of luteinization which involves cell enlargement and increased progesterone production. These luteinized GC eventually form the dominant progesterone-producing layer of the corpus luteum (see review by Behrman et al., 1993).
What is Luteinized granulosa cell?
Luteinized mural granulosa cells (GCs), which stem from the ruptured follicle, are the main cells of the CL. They can be isolated from follicular fluid of woman undergoing in vitro fertilization. This form of cell death may, in addition to apoptosis, contribute to the demise of the human CL.
What is oogenesis and explain it?
oogenesis, in the human female reproductive system, growth process in which the primary egg cell (or ovum) becomes a mature ovum. The egg cell remains as a primary ovum until the time for its release from the ovary arrives. The egg then undergoes a cell division.
What is the function of corpus luteum?
Although it’s inside your ovaries, the corpus luteum’s job is to make your uterus a healthy place for a fetus to grow. It releases a hormone called progesterone that prepares your uterus for pregnancy. Once it’s no longer needed to make progesterone, your corpus luteum goes away.
What does luteal phase mean?
The luteal phase is one stage of your menstrual cycle. It occurs after ovulation (when your ovaries release an egg) and before your period starts. During this time, the lining of your uterus normally gets thicker to prepare for a possible pregnancy.
What becomes the corpus luteum?
After the egg has left the follicle, your corpus luteum starts to form from the materials that made up that follicle. Your corpus luteum produces the hormones estrogen and progesterone. Making progesterone is the corpus luteum’s most important job, though.
What is Luteinization and how it occurs?
Luteinization is essential to the success of early gestation. It is the process by which elements of the ovarian follicle, usually including both theca interna and granulosa cells, are provoked by the ovulatory stimulus to develop into the corpus luteum.
What is premature Luteinization?
Premature luteinization (PL) refers to a rise in serum progesterone (P) levels on the day of hCG administration. Most studies used an absolute P level on the day of hCG administration as an indicator of PL, and the cutoff level differed from 0.8 to 2 ng/mL. Some authors defined PL as a P/E2 ratio of >1.
What is oogenesis answer?
Oogenesis: oogenesis is the process in which there is the formation and the development of an oocyte or ovum. It is the part of gametogenesis and the female gamete that is formed is called an ovum. It occurs in the female ovary. The ovary is called the sex organ in females in which the gamete (ovum) is formed.
What is the definition of oogonium in biology?
1 : a female sexual organ in various algae and fungi that corresponds to the archegonium of ferns and mosses. 2 : a descendant of a primordial germ cell that gives rise to oocytes.