NUR465 - Physiology of the PNS Questions & 100% Correct Answers
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Course
NUR465
Institution
NUR465
Two main divisions of the peripheral nervous system
:~~ The somatic motor system and the autonomic nervous system
Divisions of the autonomic nervous system
:~~ Sympathetic nervous system and parasympathetic nervous system
Principal functions of the autonomic nervous system
:~~ (1) regulation o...
• Implementing the acute stress response ("fight-or-flight" reaction)
Three homeostatic objectives of the sympathetic NS - cardiovascular
:~~ • Maintenance of blood flow to the brain
• Redistribution of blood flow during exercise
• Compensation for loss of blood, primarily by causing vasoconstriction
Fight or Flight Symptoms
:~~ • Increasing heart rate and blood pressure
• Shunting blood away from the skin and viscera and into skeletal muscles
• Dilating the bronchi to improve oxygenation
• Dilating the pupils (perhaps to enhance visual acuity)
• Mobilizing stored energy, thereby providing glucose for the brain and fatty acids
for muscles
Master01 | September, 2024 | Latest Update
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