Beakman explains that our nervous system is responsible for sensing pain. He uses a schematic to show the nervous system in the body and explains the traveling of signals from the neurons to the brain and back. Lester the rat hurts his tail and there is a slight delay from the event happening and your reaction (about 2 seconds).

The doctor explains to Stephen Hawking that Motor Neuron Disease is affecting his ability to use any muscle activity, such as speaking, walking, breathing, and swallowing. The signals that tell the muscles to move are disrupted, and the result is gradual muscle decay.

Your brain is an important organ that deals with a number of your body functions! Learn more in this song from the StoryBots.

Beakman explains that nerves are responsible for our five senses. He uses an animated clip to explain how nerves are responsible for bringing in environmental cues and relaying that information to the brain.

Beakman explains how leaves lose chlorophyll using a cartoon video. Then he explains the role of chlorophlyll in photosynthesis verbally. To further demonstrate, Beakman acts like the "chef" chlorophyll that provides food for the plant.