The brain, spinal cord, and cerebellum make up the CNS. Sensory input, information processing, and motor output are the three main tasks performed by the nervous system.
The building blocks and active components of the nervous system are called neurons. There are billions of neurons in the neurological system. A neuron, also known as a nerve cell, is a type of cell found inside the body that receives, processes, and sends information via chemical and electrical signals.
The fundamental units of the nervous system, called neurons, produce electrical signals called action potentials that enable them to rapidly transfer information.
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