Our nervous system is quite possibly one of the most important aspects of our body. It is crucial for our perceiving and responding to that which we encounter all around us, as well as the vast interior landscape found within each of us. Our nervous systems monitor conditions within and outside the body, sending out electrical signals to respond to all of these conditions.
The nervous system is made up of nerve tissues that are made up of billions of many types of neurons. These neurons are connected end to end throughout your body and work to transmit electrical impulses from one point to another.
The nervous system is about action and senses and consists of two groups: the central nervous system and the peripheral nervous system. The central nervous system consists primarily of the brain and the spinal cord. The peripheral nervous system consists of a vast network of neurons that spans your entire body. It has two types of neurons that are constantly at work. Neurons that receive information through your senses and transmit it to the central nervous system are called afferent neurons. Neurons that send the impulses from the central nervous system to your limbs and organs are called efferent neurons. Afferent neurons receive; efferent neurons act. When a stimulus is received, the afferent neurons work and as the reaction is needed, the efferent neurons work.