MEDICAL ANIMATION TRANSCRIPT: Pregnancy is the time period during which a baby develops inside your uterus. It usually lasts about forty weeks starting from the first day of your last menstrual period. These forty weeks are grouped into roughly three segments, called trimesters. The third trimester begins about week twenty-eight and lasts until delivery. Most babies are born at around forty weeks, but some may be born before or after that time. At the beginning of the third trimester, your baby, also known as a fetus, is over a foot long from head to rump. By week thirty-two, your baby is gaining weight quickly. Your baby’s eyes can now sense light, and the eyelids open and close. The bones are still soft, but fully formed. Your baby may kick and jab forcefully. At thirty-six weeks, the bones have started to harden. But the bones of the skull and the connections between them stay soft, allowing easier passage through the birth canal. Around this time, your baby will usually turn to a h...