The nervous system provides us with the perception of this world through the senses: hearing, touch, smell, taste, vision. We learn, evaluate and respond to the world around us with the help of this system.

The nervous system helps our body to coordinate the work of all systems among themselves, in interaction with the endocrine system. 

It has two sections: central (brain) and peripheral (spinal cord). Bad habits are fixed at the level of neurotransmitters and addiction and addiction occur.