What does the uterus do to prepare for the arrival of an egg?
After shedding, the endometrium waits for estrogen (produced in the ovaries) to rise. Estrogen causes the lining of the uterus to thicken by stimulating the endometrial cells to divide (2). After ovulation, the endometrium prepares for the possible arrival of a fertilized egg.
What happens to fertilized eggs inside of the uterus?
If the egg is fertilized by a sperm as it travels down the fallopian tube, then pregnancy occurs. The fertilized egg attaches to the lining of the uterus. The placenta then develops. The placenta transfers nutrition and oxygen to the fetus from mother.
How does the egg get to the uterus?
The egg begins its five-day travel through a narrow, hollow structure called the fallopian tube to the uterus. As the egg is traveling through the fallopian tube, the level of progesterone, another hormone, rises, which helps prepare the uterine lining for pregnancy.
What happens inside the uterus during menstruation?
Menstrual blood and tissue flow from your uterus through the small opening in your cervix and pass out of your body through your vagina. During the monthly menstrual cycle, the uterus lining builds up to prepare for pregnancy. If you do not get pregnant, estrogen and progesterone hormone levels begin falling.
What happens to the wall of the uterus during menstruation?
Menstruation is one part of a woman’s cycle when the lining of the uterus (endometrium) is shed. This occurs throughout a woman’s reproductive life. With each monthly cycle, the endometrium prepares itself to nourish a fetus. Increased levels of estrogen and progesterone help thicken its walls.
What happens in the uterus as the egg and follicle are developing in the ovary?
The ovaries produce the egg cells, called the ova or oocytes. The oocytes are then transported to the fallopian tube where fertilization by a sperm may occur. The fertilized egg then moves to the uterus, where the uterine lining has thickened in response to the normal hormones of the reproductive cycle.
What happens to the egg during menstruation?
The egg travels down the fallopian tubes. If pregnancy doesn’t occur, the egg is reabsorbed into the body. Levels of oestrogen and progesterone fall, and the womb lining comes away and leaves the body as a period (the menstrual flow). The time from the release of an egg to the start of a period is around 10 to 16 days.
What happens to the lining of uterus?
An egg is produced, the lining of the uterus thickens up, hormones prepare the vagina and the cervix to accept and support sperm. When pregnancy doesn’t occur, the egg is absorbed back into the body and the thick lining in the uterus is shed, this is your period. Then the cycle begins all over again.
What happened to the lining of uterus?
If the egg does not become fertilized as it travels down the fallopian tube on its way to the uterus, the endometrium (lining of the uterus) is shed and passes through the vagina (the passageway through which fluid passes out of the body during menstrual periods, also called the birth canal), a process called …