The Nervous System:

The nervous system in made up of the central nervous system (CNS) and the peripheral nervous system (PNS). The central nervous system is composed of the brain and spinal cord. Neurons are the basic building blocks of the nervous system. A neuron has three main parts, a cell body, an axon and a dendrite.  The dendrite is a specialized receiving unit of the neuron while the axon conducts the electrical impulses away from the cell body and sends it to other neurons. Neurons vary greatly in shape and size. Supporting cells of different types surround neurons.

Questions regarding neurons and the nervous system:

What is the difference between the CNS and the PNS?

What does an axon do? Dendrite?

References:

A basic neuron, (n.d.), retrieved from http://www.methuen.k12.ma.us/mnmelan/The Nervous system.htm

Passer, M. W., & Smith, R. E. (5th Edition). The science of mind and behavior. In McGraw-Hil.