Sex cells (sperm and ova) are called:

Sperm are produced in the man's body in winding tubules within the:

During menstrual flow, what body structure secretes hormones into the bloodstream to "direct" another ovarian follicle to begin rapid growth?

The placenta is the organ that:

The primary female reproductive organs, the ovaries, produce mature ova and the female sex hormones:

A medical diagnostic procedure, used by physicians to identify hereditary defects before an infant's birth that draws fluid from the sac surrounding the fetus, is called:

An absolutely essential growth process that begins within a few hours of fertilization and is a division of cells into identical cells  is called:

As a result of cleavage, the zygote becomes transformed into a hollow ball of cells called the:

If unfertilized, the ovum degenerates after about how much time?

During ejaculation, as the sperm pass out of the man's body through the penis, secretions that fuel and protect the sperm are also released from the: