Anatomy and physiology — nervous system

What you'll learn

1. 1

   Your nervous system is like your body's super-fast messaging network — it sends signals from your brain to every part of you.

2. 2

   Neurons are the special cells that carry these messages. They look like tiny trees with branches.

3. 3

   What part of a neuron catches incoming signals?

4. 4

   Let's trace a signal from your fingertip to your brain and back.

5. 5

   Build a simple reflex arc — drag the parts into the right order.

6. 6

   What are the two main parts of the nervous system?

7. 7

   Which type of neuron carries messages FROM the brain TO muscles?