Autonamic Nervous System

University:
Northwest College
Course:
VN 220 | Medical/ Surgical
Academic year:

2023
Views:

240

Pages:

2
Author:

YMejia

automamic menous systemregulates the activities ob the internal organs men as the heart,lungs, blood vessels, digestive organs, ,and glands.SNS (sympathetic humous system)PNS (parasympathetic hemons systemsympathetic nermous systemknown as fight or flight responsesympathetic impulses increase greatly due to physical femotionalcauses.main sympathetic neuntransmultiersympathetic neurons relocated pnmarily in the thoracic and lumbarsegments of the spinal cord. (thoracoumbar)(Has a short preganglionic fiber-long post ganghoni fiber.)parasympathetic nerrous systemfunctions as the dominant controller for most visceral functions,* main newstranstmutter is Acerylcholineimpulses from parasympathetic fibers predominate duringawert monstressful conditions- Fibers emerge from brain stem and from Spinal Segmentsbelow L2. (craniosavrel division)structureParasympatheticsympatheticpupilsconstactdilate HRBlood vissels in muscleconstrictdilateIn skeletal&delateIn abdommal nsvera&constructBIPBronchiolesconstactdil aterrPerstattic movementsmuscular sphincters of digestive RelaxcontracttureSalivang glandsThin/warenyThick / viscidSalivasalinasecretion of stomach)intestine /panereasglucose conversion&bladder: muscle wallscontractrelaxsphmetersrelaxcontractmuscles of atemsrelaxcontractblood vessels of externalgenitalinDilated&sweat0pilomotor muscles0/contractedadnenal medullaSecretion of NE/EPI