Chapter 3 Fetal and Placental Development and Functioning

Ova are considered fertile for _____ hours after leaving the follicle. a. 24 b. 36 c. 48 d. 72

A

Elevated maternal serum alpha-fetoprotein (MS-AFP) may be indicative of: a. The presence of fetal demise b. Neural tube defects in the embryo c. Chromosomal trisomies in the embryo d. Glycogen storage disorder in the embryo

B

Although the fetal glomerular filtration rate is low, daily urine produced by the fetus after 30 weeks' gestation provides _______ of the amniotic fluid present. a. 30% b. 50% c. 60% d. 90%

C

An umbilical cord shorter than 32 cm is often associated with: a. Pulmonary hyperplasia b. Placenta accreta c. Fetal entrapment d. Pulmonary hypoplasia

D

Around the 14th day after fertilization, the fertilized ovum implants setting off development of: a. The umbilical cord providing an anchor in the uterine wall b. The placental villi providing blood flow c. The decidua providing early nourishment d. Chromosomal differentiation

C

The high metabolic rate of the placenta requires utilization of up to ___% of glucose transferred from the mother as well as oxygen consumption _________ than that of the fetus. a. 20; greater b. 50; less c. 70; equal to d. 90; less

B

In the first trimester, the most accurate technique for estimating gestational age is: a. Calculation from date of missed menstruation b. Calculated by adding 30 to the mean sac diameter on ultrasound c. Ultrasound measurement of the crown to rump length (CRL) d. Ultrasound grading of the placenta

C