Body Story

Go inside the bodies of two women whose natural systems each must deal with foreign organisms trying to control its host: a flu virus and a growing fetus. The body's reaction to and changes from each "invader" are truly remarkable

This episode explores the human body's miraculous power to build and regenerate its intricate structures, and how the inevitable dimishment of that ability brings about aging and death.

Unravel the mysteries of the two most important organs in the human body - the heart and the brain. First, take a look at how frail the human heart is as an emergency team frantically works to save a heart-attack victim. Then, meet a man whose brain cannot correctly transmit signals - because he's consumed too much alcohol.

Follow the flow of hormones from pituitary glands on through the bloodstream of two young teens, Darren and Natalie, as the dramatic effects of puberty unfold. The month culminates with Natalie's first menstruation and a weekend party during which Darren's body seemingly does everything it can to ruin his chances with Natalie.

A husband and wife are critically injured in a car crash. See how the force of impact damages the delicate internal structures of their bodies and how doctors work to save their lives.

While eating at a friend's birthday party, Mike ingests Salmonella bacteria and falls ill. Follow the trail of the invading microbes through the digestive system are from the mouth to the lower intestine and examine the body's formidable arsenal of weapons designed to combat these tiny terrors.

This two-part story first explains how an infant's brain grows and develops, and how various sectors of the brain control different aspects of function. Part two takes you inside a woman who has been stung by a wasp. A subsequent sting triggers a massive and deadly allergic reaction

Go inside the bodies of two women whose natural systems each must deal with foreign organisms trying to control its host: a flu virus and a growing fetus. The body's reaction to and changes from each ""invader"" are truly remarkable.

An 11-year-old girl with a broken arm and an 87-year-old man vividly illustrate the differences in the way a young body heals itself and the way an old one struggles. See how the body repairs itself after an injury – and how these very repairs lead to our eventual demise.

Follow the flow of hormones – from pituitary glands on through the bloodstream – of two young teens, Darren and Natalie, as the dramatic effects of puberty unfold. The month culminates with Natalie's first menstruation and a weekend party – during which Darren's body seemingly does everything it can to ruin his chances with Natalie.