Which is the most accurate method of dating a pregnancy sonographically?

Animals that feed on the dead organisms from all other trophic levels (scavengers like vultures) are classified as __________.

To minimize fetal exposure to ultrasonic energy in the first trimester, which imaging trade-off must be made?

The embryo is connected to the yolk sac by the:

This 10 week gestation demonstrates findings that support a diagnosis of:

Normal embryonic herniation of the bowel permits development of:

You are scanning a second trimester patient and after 20 minutes on the table, she complains that she is dizzy and feels faint. What is he best way to aleviate her symptoms?

The maternal component of the placenta is derived from the _________  and the fetal component is derived from the _________.

Meig’s syndrome is not associated with:

The general term for organisms that acquire their energy from inorganic sources, essentially making their own food, are called…