By: Paula Lizárraga , Andrea Monje, Priscila
Vásquez, Katya Heller and Daniela Carrasco.
The primary function of the nervous system is to
control the different systems of our body. The two
parts into which our nervous system is divided are
the central nervous system and peripheral nervous
system. The spinal cord and brain together form the
central nervous system. Neural tissues outside the
central nervous system together form the peripheral
How does your nervous system work?
The nervous system is a network of cells called
neurons which transmit information in the form of
electrical signals. Your brain has around 100 billion
neurons, and each communicates with thousands
of others – as many connections as in the world's
telephone system, the biggest machine on the
planet. Neurons communicate with each other at
special junctions where chemicals help to bridge
the gap between one neuron and the next.
The nervous system is a complex collection of
nerves and specialized cells known as neurons that
transmit signals between different parts of the body.
Vertebrates — animals with backbones and spinal
columns — have central and peripheral nervous
The central nervous system is made up of the
brain, spinal cord and retina. The peripheral
nervous system consists of sensory
neurons, ganglia (clusters of neurons) and nerves
that connect to one another and to the central