Deals with the response of the body, which the brain generates after receiving the sensations or stimuli.Similarly, on smelling a foul smell, the nerve in the nose gets stimulated and the sensation is converted into an electrical signal, which travels to the brain.These generate a signal that travels to the brain, and the necessary response from the motor neurons to remove the hand of the pan occurs. On touching a hot pan, the sensation is received by the sensory neurons present on the skin of the hand.They are activated on the reception of a stimulus (any change in the external environment) and send impulses (electrochemical pulses) to the spinal cord and brain via nerves.The specialized nerve cells called receptors (which are part of neurotransmitters) are present all over the body.This is the reception of all the changes happening in the surroundings that are received by parts of the brain.Autonomic functions, which people cannot control, such as the beating of the heart.Somatic functions, which people can control voluntarily, such as blinking of the eyelids.These major functions can again be divided into two major categories. Integration of sensory information from different parts of the body and processing them.Receiving and perceiving special sensations (taste, smell, vision, sounds).Reception of general sensory information (touch, pressure, temperature, pain, vibration).The 4 main functions of the nervous system are: Here are the 4 main functions of the nervous system.
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