Select the correct statement about the special fetal blood vessels.

A) The distal parts of the umbilical arteries form the superior vesical arteries.

B) The fossa ovalis becomes the foramen ovale.

C) The umbilical vein becomes the ligamentum teres.

D) The hepatic portal vein forms from the umbilical artery.

Answer: C) The umbilical vein becomes the ligamentum teres.

The decidua basalis is ________.

A) destined to remain in the uterus after the birth of the infant

B) located between the developing embryo and the myometrium

C) not a maternal contribution to the placenta

D) the tissue that surrounds the uterine cavity face of the implanted embryo

Answer: B) located between the developing embryo and the myometrium

Which of the following is not usually considered a teratogen?

A) aspirin

B) wine

C) thalidomide

D) German measles

Answer: A) aspirin

Derivatives of the mesoderm include ________.

A) all nervous tissue

B) endothelium of blood and lymph vessels

C) glandular derivatives of the digestive tract

D) epithelium of the digestive tract

Answer: B) endothelium of blood and lymph vessels

Derivatives of the endoderm include ________.

A) epithelium of the respiratory tract

B) synovial membranes of the joints

C) blood, bone marrow, and lymphoid tissue

D) organs of the urogenital system

Answer: A) epithelium of the respiratory tract

Which of the choices below occurs if fertilization of the ovum occurs and implantation takes place?

A) The corpus luteum is maintained until the placenta takes over its hormone-producing functions.

B) The corpus luteum degenerates and becomes the corpus albicans.

C) The ovarian cycle begins.

D) Increased levels of FSH will be produced.

Answer: A) The corpus luteum is maintained until the placenta takes over its hormone-producing functions.