Dendrites are the branch-like structures of neurons that extend from the cell body (Soma). The dendrites receive neural impulses (electrical and chemical signals) from the axons of other neurons. The signal always travels in the same direction - the signal comes into the neuron through the dendrites, through the cell body (soma), to the axon, and then out the terminal buttons to the dendrites of the next neuron. In this way information travels all around your body by going from neuron to neuron.
You can see an image of an axon (as well as two neurons) by going to: http://www.alleydog.com/images/2neurons.gif