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Nervous System

Summarized by Plex Health
Last Updated: 01 May 2022
body showing the entire nervous system "body showing the entire nervous system", by National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health. Illustration of the entire nervous system inside of the human body....

The nervous system is the significant controlling, regulatory, and interacting system in the body. Together with the endocrine system, the nervous system is responsible for regulating and maintaining homeostasis. Through its receptors, the nervous system maintains us in contact with our environment, both outside and interior. Like other systems in the body, the nervous system is made up of organs, mostly the brain, spinal cord, nerves, and ganglia. Numerous sensory receptors find changes, called stimulations, which occur inside and outside the body. All of this collected info is called sensory input. Sensory input is exchanged electrical signals called nerve impulses that are transmitted to the brain. Based on the sensory input and assimilation, the nervous system responds by sending out signals to muscular tissues, causing them to contract, or to glands, triggering them to produce secretions. Since they cause an impact in response to instructions from the nervous system, glands and muscular tissues are called effectors. This is the motor output or motor function.

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