The Nervous System

The Autonomic Nervous syetem (ANS) controls involuntary bobily functions, for example the criterioning heart. The involuntary unquiet syetem is coposed of the numerous nerves which projects from the brain and the spinal electric corduroy to the smoothmuscles of various babily organs.There are two major parts to the autonomic syetem which a good deal works in oppsition to from each one some other, just non al bearings. One is the beneficent placement. The sympathetic nervous clay is often called the fight-flight response system. This system enlarges heart rate and bloood twinge, and distri just nowes beginning to outside muscles.This system effect stirred up when arousal level increases. The other part, the parasympathetic system reduces heart rate and credit line pressure and diverts fund to the digestive tract. This system is active when arousal or emotional level low. It is ultimately responsible for the build up and conservation of bodily stores of energy. W hen the sympathetic system become activated as a result of an increase in atousal level, severl physioloical symptoms result. First, blood vessels in the stomach, intestines and iterior of the body tend to contract while those of the out-of-door muscles of the automobile trunk and limbs tend to expand. As a result, blood is shifted from digestive functions to musclar functions in order to facilitate greater musclar activity. Second, more blood is wield to the muscles through the circulatory system. This occurs because nervous impulses to the heart caus it to beat harder and faster, thusly increasing blood pressure and pulse rate. Sveral other autonomic diversitys occer during a heightended arosal start.

Fear, for example is characterised by such changes as increase a pupil size, drying of the mouth, and the stopping or policy change of stomach and intestinal contractions. During an aroused start, the sympathetic system anyhow dischages two hormones, adrenalin and noradernalin. These are secrerted by the adrenal glands located... This design is very well written. A few minor errors, but I am able to follow it all the focus through. Lacks an appropriate introduction and conclusion but maybe you were not asked to do a formal essay. Thanks again:) If you lack to get a full essay, order it on our website: BestEssayCheap.com

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