Estrogen is one of the hormones that trigger the development of secondary female characteristics.

The onset of mature egg cell production among females starts around the ages of 11 to 14 years, during the first discharge of blood from the vagina called _______.

The female reproductive system during copulation and after fertilization has occurred, the role in nourishing and protecting the fertilized egg during nine months of development. This is called _________.

All females are born with all the approximately __________ egg cells they will produce in their lifetime.

Egg cells contains ____ chromosomes (n) since egg are also produced through meiosis.

During puberty, the increased production of hormones enables one immature egg to complete its development each month.

In the lifetime of a female, out of the 400 000 egg cells at the puberty, only 300 to 500 will mature and are then called ova.

About every _____ days, an ovum is released in an adult female body

Hairlike structures called ______ sweep the ovum from the ovary into either of the fallopian tubes or oviducts

It takes _________ for an ovum to travel inside the fallopian tube.

During copulation, sperm cells are deposited inside the vagina, a passage that leads from the outside of the female's body to the entrance of the uterus called the __________

If fertilization occurs, the fertilized ovum, now called zygote, travels down further and implants itself in hollow, fist-sized muscular organ called ________

During a normal childbirth, a baby passess through the cervix and leaves the mother's body through the ________

All-female who have reached puberty will undergo monthly physiological cycles known as

The monthly release of an ovum from the ovary is called _______

The ovarian cycle occurs in two distinct phases or stages: the follicular phase and the luteal phase.

The follicular phase and luteal phase are regulated by the hormones produced by the hypothalamus and anterior pituitary gland.

The follicular phase begins when the anterior pituitary gland releases the gonadotrophins: follicle-stimulating hormones and luteinizing hormones into the bloodstream.

Estrogen is a sex hormone that aids the growth of the ovarian follicle in the ovary.