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Its main function is to integrate the activity of all systems, organs and tissues of the body.
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It is in charge of receiving stimuli from both the outside and the body itself, processes them and generates responses to them.
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It consists of the nerves outside the brain and the spinal cord. It includes the cranial nerves, spinal nerves, peripheral nerves and neuromuscular junctions.
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Receives and processes sensory information, initiates responses, stores memories, generates thoughts and emotions.
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Conducts signals to and from the brain, and controls reflex activities.
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They send signals from the CNS to the muscles and glands.
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They send signals from the sensory organs to the CNS.
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Controls voluntary movements.
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Controls involuntary responses.
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It is related to the "fight or flight" response.
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It is related to the relaxation processes, it is also called "rest or digest".