Manor Preboards Module 6 Practice Test

Pregnancy is the period from conception to birth. It starts when a sperm fertilizes an egg and continues through the entire development of the embryo and fetus until delivery. The other terms refer to specific events within that span: fertilization is the union of sperm and egg, cleavage is the rapid cell divisions after fertilization, and implantation is when the embryo attaches to the uterine lining. The term that describes the whole duration from conception to birth is pregnancy.