Viewers are shown how sound waves move through the ear and are changed to nerve impulses that affect the brain. They are informed that the smallest bones and muscles in the body are found in the ear, along with a sound system so compact it can fit in a ping pong ball. Also discussed is why the ear generates wax, pops when one rises in elevation and why people get dizzy after spinning. Additionally, defective hearing is explained. Colourful graphics enhance this program.
Humans can live for days without food or water but for only a brief time without air.
This exploration of respiration is a valuable lesson on breathing and its effect on the body. Asthma and other respiratory illnesses are examined. The process of respiration is revealed through colourful graphics and humour.