Pregnancy. Birth, and Development

_____ occurs when a sperm cell enters the oocyte creating the zygote

• fertilization

• pregnancy

• menstruation

• ovulation

The product of fertilization is a single cell called a _____

• zygote

• embryo

• fetus

• neonate

Teh _____ surrounds the developing embryo/fetus, providing a protective fluid environment

• amniotic sac

• placenta

• umbilicus

• endometrium

During the first trimester, the embryo secretes special hormones that prevent the mother from undergoing _____

• menstruation

• parturition

• tubal ligation

• urination

_____ is the process by which a baby is born

• menstruation

• parturition

• ovulation

• fertilzation

_____ is the period during which the contractions of the uterus occur that eventually expel the fetus and placenta from the uterus

• labor

• parturition

• ovulation

• gestation

• As the embryo is implanted, the _____ is formed from cells within the embryo (which functions to exchange nutrients and waste between the developing embryo/fetus and the mother)

• placenta

• amnion

• zygote

• chorion

• About 7 days after fertilization, the developing embryo burrows into the endometrium (usually in the area of the fundus), a process called _____

• implantation

• menstruation

• capacitation

• ovulation

Fertilization occurs when ____ sperm cell(s) enter the oocyte

• 1

• 2

• 3

• 4

The oocyte can be fertilized for up to ____ after ovulation

• 24 hours

• 5 days

• 28 days

• 2-3 weeks