Shows how special nerves in the sense organs called receptors work together with the brain so that human beings can make "sense" of the world around them, presenting examples from a trip to an amusement park, as well as hands-on activities.
Explains how each part of the digestive system helps break down food so that it can be absorbed into the bloodstream, and what role each part of the excretory system plays in removing the body's waste; presents an experiment on digestive acids and enzymes; and includes a visit with a kidney specialist.
Provides an introduction to the male and female reproductive and endocrine systems, discussing growth, puberty, sexual maturity, the production of sex cells, and the process of fertilization.
Examines the digestive system, explaining how food is broken down and absorbed into the bloodstream, and how the excretory system removes waste products and indigestible materials.