Neurons

The nervous system is made up of billions of cells called neurons.

Neurons carry messages in the form of electrical impulses.

There are three types of neuron;

• sensory

• Inter

• Motor

Sensory neurons pass the information from the receptors to the CNS.

Inter neurons operate within the CNS.

The CNS processes information from the senses that require a response.

Motor neurons enable a response to occur at an effector.

A response to a stimulus can be a rapid action from a muscle or a slower response from a gland.

Chemicals transfer these messages between neurons. The space between neurons are called synapse.