Answer to Question 1
A
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A Amniotic fluid also cushions the fetus and helps maintain a constant body temperature.
B The volume of amniotic fluid changes constantly.
C Too little amniotic fluid (oligohydramnios) is associated with renal abnormalities.
D Too much amniotic fluid (hydramnios) is associated with gastrointestinal and other abnormalities.
Answer to Question 2
1
Rationale
1. This is a normal finding at 16 weeks. The posterior fontanelle closes within 812 weeks.
2. The posterior fontanelle closes within 812 weeks. This is a normal finding at 16 weeks, and does not require emergency evaluation.
3. Overriding of the cranial bones is referred to as molding, and will diminish within a few days following birth.
4. Fontanelles can be depressed when the infant is dehydrated.