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What is a rupture of the graafian follicle known as?
When ovulation occurs, the graafian follicle(s) rupture. The oocyte with surrounding cumulus cells (COC's) are expelled into the infundibulum and transported to the site of fertilization. Before and during the rupture of the graafian follicle, blood vessels will rupture too, which causes hemorrhaging. So the structure that is left behind after the oocyte is expelled, is called a corpus hemorrhagicum.
What anterior pituitary hormone causes the enlarged ovarian follicle to rupture and release a mature ovum?
Luteinizing hormone (LH) is the anterior pituitary hormone that causes the enlarged ovarian follicle to rupture and release a mature ovum during ovulation.
The ovulating hormone that causes the follicle to rupture and the egg to be expelled is?
Luteinizing Hormone (LH)
What phase of the ovarian cycle does a spike in LH cause the follicle to rupture and release the ovum?
Luteal phase
Is there any chance of pregnancy after no dominant follicle seen?
Yes, although the odds are lower. A dominant follicle is a single follicle with a maturing oocyte in it that is much larger than all the other follicles that started to develop in this cycle. The dominant follicle is the one that will eventually rupture and release a fertile oocyte, so not having a dominant follicle means the cycle is more likely to not be a fertile cycle.
What ruptures on the ovarian cortex each month?
Follicles containing eggs rupture on the ovarian cortex each month during ovulation. When a follicle ruptures, it releases the mature egg into the fallopian tube for potential fertilization.
What hormone is secreted by the follicle wall during ovulation?
In the late maturation follicular phase, the dominant follicle level secretion of estrogen crosses a certain threshold stimulating Luteinizing Hormone (LH) secretion, which in turn stimulates more estrogen production by the follicle. The result is a rapid increase in LH secretion, the LH surge, and therefore triggers the rupture of the dominant follicle, in other words, ovulation.
Ultrasound scan shows no follicle rupture but i missed my period and got a faint line on preg test am i pregnant?
Yes. The pregnancy test is nearly 99% correct if it reads positive. Congrats.
Which region of the uterine tube captures the ovum?
During ovulation, the ovum is released due to rupture of the Mature or Graafian follicle. The unfertilized ovum is captured by the fimbria of the tuba uterina or oviduct at the infundibulum region.
What releases the egg into the flopian tube?
The release of the egg (ovulation) is triggered by a surge in luteinizing hormone (LH) mid-cycle, which causes the follicle to rupture and release the mature egg into the fallopian tube.
What is the average size of follicle when ruptured?
The average size of a follicle at the time of rupture, which is when ovulation occurs, is typically around 18 to 24 millimeters in diameter. This size can vary among individuals and may be influenced by factors such as hormonal levels and the specific menstrual cycle. Follicles reach this size as they mature, filled with fluid and an egg, ready for release.
Which hormone spikes midway through the menstrual cycle and triggers ovulation?
Luteinizing hormone (LH) Luteinizing hormone (LH) secreted by the pituitary gland causes the mature ovarian follicle to rupture, a process called ovulation. -masteringbiology.com
