The human body's nervous system is built from billions of nerve cells,which are called

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Neurons are the fundamental units of the brain and nervous system, responsible for receiving sensory input from the external world, sending motor commands to our muscles, and transforming and relaying the electrical signals at every step in between. Neurotransmitters are chemicals that neurons release to communicate with each other, axons are long, slender projections of neurons that conduct electrical impulses, and cell bodies (or soma) contain the nucleus and other organelles of the neuron.

The Human Body's Nervous System Is Built from Billions of Nerve