Pregnancy adn Fetal Development Review Quiz

1. Examples of the placental function of exchange are
oxygen movement from mother to fetus.
 glucose movement from mother to fetus.
 urea movement from fetus to mother.
 estrogen movement from placenta to mother.
2. Examples of the placental function of chemical protection are:
HCG production by the placenta in the human.
 immunosupression by the placenta.
 filtering of enviornmental toxins from the mother.
 protection agains infliltration of maternal defenses.
3. Acting as a shock absorber is a physical protection function of the placenta.
True
 False
4. The transient production by the placenta of estrogen, progesterone, and placental lactogen are examples of an endocrine function of the placenta.
True
 False
5. The fetal age can be estimated by
measurement of the crown-rump length.
 measurement of the femur.
 measurement of the length of digits.
 measurement of the size of the ears.
6. The uterus changes size during pregnancy by
hypertrophy.
 hyperplasia
 stretching.
 formation of binuclear giant cells.
7. Fetal ciruculation is different from adult circulation due to
the ductus venosus.
 the ductus arteriosus.
 the foramen ovale.
 the vena cava.
8. A woman without ovaries, can maintain a pregnancy if given progesterone daily for the first 90 days of pregnancy.
True
 False
9. A mare whom continually aborts before day 60 of pregnancy can be give progesterone up through day 120 of gestation to help maintain a pregnancy.
True
 False
10. The length of gestation in the cow is
114 days.
 340 days.
 280 days.
 266 days.
11. Increased litter size in pigs will result in individual baby pigs in the litter, being smaller in size or weight.
True
 False
12. Which of the following are examples of enviornmental effects on fetal size?
Feed availability to the mother.
 Parity of the mother.
 Insulin production by the fetus.
 Breed differences, such as between hosteins and jersey cows.
13. Endometrial cups are important during pregnancy in the mare because they make
progesterone.
 eCG.
 HCG.
 estradiol.
14. During the routine veterinary exam following parturition, a premature foal is described as having a ductus arteriosus that has not yet closed. This is a duct or shunt between the
Pulmonary artery and the aorta.
 Vena cava and the left atrium.
 Umbilical vein and vena cava.
 Aorta and umbilical artery.