What is the difference between peripheral and autonomic nervous system

Psychology Neuroscience and Behavior Neurons and Behavior. Saikat R. Mar 4, These are different divisions of the nervous system. Explanation: Here is a chart showing different divisions of the nervous system.

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Explore Psychology Psychology Search. Explore Blog Reference library Collections Shop. For example, think about how you feel when you have to stand up and give a presentation in front of a roomful of people, or right before taking a big test. You are in no real physical danger in those situations, and yet you have evolved to respond to any perceived threat with the fight or flight response. This kind of response is not nearly as adaptive in the modern world; in fact, we suffer negative health consequences when faced constantly with psychological threats that we can neither fight nor flee.

Once the threat has been resolved, the parasympathetic nervous system takes over and returns bodily functions to a relaxed state. These processes are associated with activation of the parasympathetic nervous system. The brain and spinal cord make up the central nervous system. The peripheral nervous system is comprised of the somatic and autonomic nervous systems.

The somatic nervous system transmits sensory and motor signals to and from the central nervous system. The autonomic nervous system controls the function of our organs and glands, and can be divided into the sympathetic and parasympathetic divisions. Sympathetic activation prepares us for fight or flight, while parasympathetic activation is associated with normal functioning under relaxed conditions. What are the implications of compromised immune function as a result of exposure to chronic stress?

Most of the nerves have both sensory and motor components. Three of the nerves are associated with the special senses of smell , vision, hearing , and equilibrium and have only sensory fibers.

Five other nerves are primarily motor in function but do have some sensory fibers for proprioception. The remaining four nerves consist of significant amounts of both sensory and motor fibers.

Acoustic neuromas are benign fibrous growths that arise from the balance nerve, also called the eighth cranial nerve or vestibulocochlear nerve. These tumors are non- malignant , meaning that they do not spread or metastasize to other parts of the body. The location of these tumors is deep inside the skull, adjacent to vital brain centers in the brain stem. As the tumors enlarge, they involve surrounding structures which have to do with vital functions. In the majority of cases, these tumors grow slowly over a period of years.