It's almost impossible to describe the neuroanatomy in only a dozen of articles. This chapter is only an overview of the main organs that are key to the understanding of the nervous system.

We try through this chapter to approach the nervous system from a biological point of view, we examine the cells and molecules implicated, and also the transmission of the nervous signal.

Many organs and systems allow us to be aware of the environment around us, this chapter describes the organs and mechanisms involved in our perception of the world.

We act on our environment through different motor systems, this chapter describes the essential structures and functions involved.

Cognition involves many higher order functions : Memory and learning, language, conscience, executive functions ... This chapter tries to give an overview of each.

Neurophysiology can tell us about how certain neurological diseases occur. We describe in this chapter the pathophysiological mechanisms of the most common neurological disorders.