During the menstrual cycle, the uterus prepares for a possible pregnancy by building up its lining (endometrium). If fertilization does not occur, the uterus sheds this lining during menstruation. The hormones involved in the menstrual cycle regulate these changes in the uterus.
Because your menstrual cycle is the lining of your uterus shedding.
The lining of the uterus is shed during the menstrual phase of the menstrual cycle. This is when the body sheds the built-up uterine lining in the absence of a fertilized egg, resulting in menstrual bleeding.
The uterus lining changes in thickness during the menstrual cycle in response to hormonal levels. In the first half of the cycle, estrogen causes the lining to thicken in preparation for a potential pregnancy. If fertilization does not occur, estrogen levels drop and the lining sheds during menstruation.
Menstrual cycle.
endomoetrium
The lining of the uterus shed during the menstrual cycle is called the endometrium. It is the innermost layer of the uterus that thickens in preparation for potential pregnancy and is shed if fertilization does not occur.
During a menstrual cycle, the uterus thickens its lining in preparation for a possible pregnancy. If pregnancy does not occur, the uterus sheds this lining through menstruation. The cycle is controlled by hormones such as estrogen and progesterone.
Menstruation is one of the phases of the menstrual cycle, whereas the menstrual cycle is the entire reproductive system. During the menstrual cycle an egg is released and to prepare for possible pregnancy the uterus lining plumps-up, if pregnancy doesn't occur the uterus lining sheds (menstruation) so it can start afresh again next cycle.
The phases of the menstrual cycle include:Menstrual phase: when uterus lining sheds.Follicular phase: when eggs begin to mature in the ovary.Ovulation phase: when eggs are released from the ovary.Luteal phase: when the uterus lining plumps up.
The menstrual cycle is the reproductive cycle of human beings, experienced by females. Every cycle the body prepares for chance of pregnancy by releasing an egg and plumping-up the uterus lining, if pregnancy doesn't occur then the uterus lining sheds ready to start a new next cycle.
During a woman's menstrual cycle, she will begin to ovulate. During ovulation, the ovary releases an egg. If the egg is not fertilized, it will continue to make its way down into the uterus. The uterus will begin to shed its lining since it is not needed. The lining of the uterus and the egg will be expelled from the vagina. This step of the menstrual cycle is what is refered to as the period.