The number of sperm that can fuse with an oocyte is limited to _______. This is vital in order to make sure that a fertilized egg has a balanced number of _______ from the father and the mother.

With the implantation of the fertilized egg in the wall of the _______, cells in the egg grow into the fetal portion of a network of blood vessels and membranes that support the fetus. This is the _______.

Labor can be defined as regular _______ of uterine _______ that help bring about the birth of the baby.

Sperm begin development in the _______ and continue development and are stored in the convoluted tubules called the _______.

The material that is ejaculated from the penis, _______, is composed of both _______ and fluids secreted by three supporting _______.

Males are able to remain fertile throughout their lives because the cells called spermatogonia are reproductive _______ that give rise to more of themselves and to the _______ that develop into sperm.

While they are in development, the reproductive cells a woman produces are known as _______ and are produced in the organs called _______.

Every 28 days, on average, one of these reproductive cells is released in the process called _______ and then begins a journey down one of the woman’s _______.

Menstruation, the release of blood and a portion of the uterine tissue called the _______, occurs when there has been no _____ during the reproductive cycle.

When a couple is having trouble conceiving a child, the first thing fertility specialists generally will look at is the fertility of the prospective father. What do you think a specialist would be looking for?

The precursors of the eggs produced by females are (select all that apply):

a. released from ovaries.

b. released at the rate of about six per month.

c. called oocytes.

d. surrounded by fluids and accessory cells.

e. put into blood circulation.