A woman’s ovaries produce a hormone called estrogen and release one egg each month. Women are born with a limited number of eggs in their ovaries and do not produce new ones after birth. On the contrary, from the very moment of birth, a woman begins to lose eggs, and eventually, they become depleted. This usually occurs around the age of 50, a stage known as menopause, which is an irreversible and permanent process.
Egg donation is used when a woman’s ovaries do not produce eggs that can be fertilized. This occurs when a woman has lost her ovaries after surgery, radiation, or chemotherapy, or due to a congenital problem. It is also used when there are issues with egg quality related to age or when there are hereditary diseases that the woman does not wish to pass on to her children.
A pregnancy ending in miscarriage is a common occurrence. Most of the time, it is due to a random genetic error, with a low probability of recurring. However, when three consecutive miscarriages occur, other causes may be suspected and need to be investigated, which is referred to as recurrent pregnancy loss.
The Fallopian tubes are responsible for carrying the eggs from the ovary to the uterus. To do this, the tubes use two mechanisms.
A medida que el hombre envejece, se observa que el volumen del eyaculado disminuye. Así mismo, la movilidad de los espermatozoides es menor. Por otro lado, el número de espermatozoides producidos y la capacidad fecundante no cambian.
When a woman is born, she has approximately two million eggs stored in her ovaries. From that point on, she does not produce new eggs; on the contrary, she begins to lose them at an accelerated rate. By puberty, this number is reduced to only 400,000, and they are completely depleted at around age 50.
