The crown-rump length measurement may be used up _____ week.

Average normal heart rate in a 2nd trimester fetus is ___________.

What is the uterine cervix called during pregnancy?

The single most useful biometric parameter to assess fetal growth is:

What do you see on the image above?

The most accurate biparietal diameter measurement are made at what week of gestation?

A sonogram of a 10-week gestation demonstrates a cystic area within the posterior cranium. This most likely represents:

Identify the structures labeled as #1 (Hypoechoic area).

The abdominal circumference (AC) on a transverse view is measured at the level of all structures except which of the following?

What organs are clearly seen on the image below?