When figuring the due date by a sonogram, the doctor will measure the crown-rump length (CRL). The length of the embryo on the longest axis constitutes the crown-rump length. This is actually...
There is no such thing as 12 AM or 12 PM.Those are commonly used improper terms. The abbreviations AM and PM stand for Ante Meridiem and Post Meridiem, respectively. The terms ante and post mean...