The human total fertility rate (select all that apply):

a. is the average number of children born to each family in a population.

b. has been dropping worldwide in recent decades.

c. must be at about 3 for a population to be at replacement level.

d. is generally much lower in less- developed countries.

e. is higher in the United States than in most developed countries.

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?