The developing fetus lives in a sac filled with amniotic fluid, about a quart by the last week of pregnancy. In order to enter the birth canal, the baby must leave the sac. Watch this animation of “water breaking.”

Animation produced by Visible Productions Inc.

Want to know how to look marvelous without splurging so much? Dr. Oz invites three beauty experts to share the smartest ways to save money while looking fabulous starting from your hair and makeup tools to the beauty products you use.