Nervous System

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Author:
arichter
ID:
100574
Filename:
Nervous System
Updated:
2011-09-08 16:57:02
Tags:
Med terms week PNS anatomical
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Description:
Med Terms - Nervous System
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  1. peripheral nervous system (PNS)
    nerves that branch from the central nervous system including nerves of the brain (cranial nerves) and spinal cord (spinal nerves)
  2. cranial nerves
    12 pairs of nerves arising from the brain
  3. spinal nerves
    31 pairs of nerves arising from the spinal cord
  4. sensory nerves
    nerves that conduct impluses from body parts and carry sensory information to the brain; also called afferent nerves
  5. motor nerves
    nerves that conduct motor impulses from the brain to muscles and glands; also called efferent nerves
  6. autonomic nervous system (ANS)
    nerves that carry involuntary impulses to smooth muscle, cardiac muscles and various glands
  7. hypothalamus
    control center for the autonomic nervous system located below the thalamus (diencephalon)
  8. sympathetic nervous system
    division of the autonomic nervous system that is concerned primarily with preparing the body in stressful or emergency situations
  9. parasympathetic nervous system
    division of the autonomic nervous system that is most active in ordinary conditions; it counterbalances the effects of the sympathetic system by restoring the body to a restful state after a stressful experience

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