The term menarche means beginning of menstruation in girls. The usual age of this is 12 years.
menarche
Well, the menstruation starts at the age of 12-13 in girls. The term for onset of menstruation is menarche .
During puberty, hormone production increases. The hormone testosterone, produced in the testes beginning in puberty, is responsible for sex drive.
At the beginning of the menstrual cycle. (during first two weeks)
Onset of menstruation which happens during puberty is termed menarche.
A girl gets her period (menstrual cycle) and boys get lots of underarm hair
The function of the cervix is to allow flow of menstrual blood from the uterus into the vagina, and direct the sperms into the uterus during intercourse.
During puberty, increasing estrogen levels promote breast development. During the proliferative phase of the menstrual cycle, estrogen increase causes the bleeding to stop.
The process of oogenesis occurs beginning just before female's birth with the creation of haploid sex cells, then are arrested (stopped) until the female begins ovulation as part of a menstrual cycle. Then, oogenesis continues throughout a woman's lifetime.
The stage of the menstrual cycle during which blood, tissue, and an unfertilized ovum are discharged is known as menstruation, or the menstrual period. This occurs in the beginning of the menstrual cycle when the uterine lining sheds due to the absence of a fertilized egg.
yes, you create sperm during puberty.
Nothing , that's what happens during puberty