The human body. Part 4, Raging teens.

The fourth in a 7-part series in which Robert Winston looks in detail at the life of the human body in chronological order from birth to death. This part focuses on puberty. The physical changes of the body caused by hormones are illustrated. A group of teenage boys in California describe how puberty has affected them and the cameras follow Beatrice through 18 months of her life as she passes from 12 years old to nearly 14. The effects of estrogen and testosterone on the developing teenage body are shown in animated diagrams of the female reproductive system and the male sexual organs. Other teenage issues are covered such as acne, sexual urges, the development of pubic hair, the onset of menstruation and the development of the brain to think through complex moral reasoning to make a mature judgment.