it is possible to become pregnant at any point in the menstrual cycle. During the menstrual phase, the pituitary gland begins to secrete follicle-stimulating hormone (FSH). Rising levels of FSH trigger the beginning of the next phase, called the ...
Noun1.menstrual cycle- a recurring cycle (beginning at menarche and ending at menopause) in which the endometrial lining of the uterus prepares for pregnancy; if pregnancy does not occur the lining is shed at menstruation; "the average menstrual cycle is 28 days" ...
Menstruation is the vaginal bleeding that occurs at the beginning of a woman's menstrual cycle and corresponds to the shedding of the endometrium when there has been no pregnancy. This stage of the menstrual cycle is also known as a period since it has a periodicity, that is, it is a cyc...
What Is Menstruation? Shortly after the beginning of puberty in girls, and usually about 2 years after the development ofbreasts,menstruationstarts. While menstruation usually begins between ages 12 and 13, it may happen at a younger or older age. The first menstrual period is called "menarche....
Now take a look at The Story of Menstruation, a ten-minute long educational short film from Disney that defines the menstrual cycle for young girls beginning or currently experiencing puberty. The film chronicles it all, from what the cycle is, why it occurs, how it occurs, how to cope ...
5) Menarche refers to which of the following? (A) Beginning of menstruation (B) Development of female characteristics (C) End of childhood (D) End of pregnancy (E) Primary infertility 6) Adipose tissue is made of which of the following?
If the egg is not fertilized or there is no implantation of the embryo in the uterus, the functional layer of the endometrium necroses and flakes off at the end of the menstrual cycle producing the bleeding known as menstruation. This bleeding marks the beginning of a new menstrual cycle, ...
In three previous papers1 we have shown, successively, that the female sex hormone can be extracted from the circulating blood of the sow; that it can be demonstrated in the circulation of the human female, beginning to appear from ten to fifteen days before the onset of menstruation in an...
which are secreted by follicles in the ovary. At the beginning of the cycle, the follicle is stimulated by FSH. In response, it grows and secretes estrogen. The amount of estrogen secretion increases rapidly near the middle of the cycle. Estrogen, in turn, stimulates growth of the uterine ...
The period of puberty represents a transition from the period of growth to complete somatic and sexual maturity. The menarche , or the appearance of the first menstruation, is a single event in the course of puberty. It does not denote either the end point or the beginning of the pubescent...