Animated, narrated slide show that describes how amniotic fluid is sampled during amniocentesis. An ultrasound probe is used to help guide the needle during the procedure.

This narration describes a normal 28 day menstrual cycle. It covers the main hormones that are involved in the release of an egg from the ovary. There is a discussion about how hormones control menstruation if the egg is not fertilized and how they support pregnancy if the egg is fertilized by a sperm.

This narrated animation shows how an egg from the ovary that, once fertilized, implants in the womb. This fertilized egg (zygote or embryo) is supported by the endometrial lining of the uterus. The video continues to describe how the fetus develops and interacts with the amniotic fluid and the womb.

Pelvic inflammatory disease can cause a severely painful condition and leads to infertility. As the video describes, pelvic inflammatory disease or PID is often caused by sexually transmitted diseases such as Chlamydia or gonorrhea.