Exam 23: Pregnancy, Growth, and Development

At the blastocyst stage, the cells are considered

Thalidomide is

The fetal stage of development begins at the end of the eighth week.

Apoptosis occurs

The major body parts derived from endoderm are the epithelial lining of

The yolk sac

The structure that surrounds the cell membrane of the secondary oocyte is the ___ ________.

The adolescent period begins at the end of the first year and completes at puberty.

The hormone measured in a pregnancy test is

The process of growing old is called _____.

Labor is regulated by

The fetal blood that passes through the ductus venosus is relatively

The major body part(s) derived from ectoderm is/are

The major body parts derived from mesoderm are the

Fetal hemoglobin becomes largely replaced with adult hemoglobin

The placenta is composed of tissues from the

The ductus arteriosus allows fetal blood to move from the

After birth, the ductus arteriosus constricts and becomes the ligamentum arteriosum.

The placental membrane is composed of

Fertilization usually occurs in the