The Nervous System

As you work through your trip, answer the following questions in your Travel Log.

1. If you haven't already started a Notes Page for this Safari Quest, open one and copy and paste the following items into a Notes Page.
2. Access the Web Resource for this side trip.
3. Complete each item as you explore.
   • In the nervous system area, click on the Brain.
     • About how much does a typical, adult, human brain weigh?
     • What are the three main parts of the brain and what in general do they control?
     • What is the function of the fluid around the brain?
   • Click on the Nervous System button on the left side of the page (blue area).
   • Choose Nerve Cell.
     • Roll your mouse over the Nerve Cell. Identify the nucleus, dendrite, and axon part of the nerve cell.
     • Draw and label a nerve cell in your Notes Page. Include the function of each part of the neuron.
     • Then write a one-sentence description of what a typical nerve cell (neuron, a nerve cell) looks like.
     • Then write a description of how the structure of each part of the cell fits its function.

Web Resource: howstuffworks.com: Nervous System

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