The optimal gestational age for measuring the nuchal translucency is _______ weeks.

Normal amniotic fluid volume cannot exclude renal agenesis before _____ weeks’ gestation.

The embryonic heart begins to beat at __________ days.

Sonographic evaluation of the normal fetal thorax should include all of the following except:

The middle layer of the uterus is which one of the following?

An anomaly with large cranial defects, facial cleft, large body-wall defects, and limb abnormalities is called which one of the following?

Which of the following types of anterior abdominal wall defects are the most common?

In early pregnancy, the gestational sac size grows at a rate of _____ mm/day.

A fetus with partial situs inversus demonstrates which of the following abnormalities?

The mortality rate at birth for the fetus with a diaphragmatic hernia is ____________.