Exam 21: Second and Third Trimester Obstetrics 13 to 42 Weeks

The umbilical cord has

What vessels comprise the umbilical cord?

Placenta previa occurs

The ___________ of bone(s) ______________ sound waves.

Collapsed, the fetal colon typically

The atrial septal opening is the

In more than 90% of pregnancies, the fetal urinary bladder is visualized by

Head circumference (HC) is best obtained through (a) ___________ plane(s) of section perpendicular to the ________________.

An accurate biparietal diameter (BPD) measurement can be obtained through any plane of section that intersects the

Anechoic, tubular structures on the uterine surface of the placenta are called

The three causes of placenta previa are ________________, _______________, and _______________________.

The fetal lungs are capable of functioning as early as sometime after

The fetal adrenal glands appear _______________ to the liver, spleen, and renal cortex.

A grade III placenta may have

The cisterna magna is a(n)

Muscles usually appear ______________ compared with adjacent structures.

Cerebrospinal fluid is produced in the fetus by the

Identification of the great arteries and outflow tracts in their usual positions confirms normal ___________________ connections.

Abdominal circumference (AC) is measured through (a) _________ plane(s) of section where the __________ are continuous with one another.

The thalami are