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PNS

QuestionAnswer
cranial nerves 12 pairs attaches to undersurface of brain and connect brain w neck and structures of thorax and throat
spinal nerves 31 pairs, contain dendrites of sensory neurons and axons of motor neurons and conduct impulses necessary for sensations and voluntary movements
dermatome skin surface area supplied by 1 cranial/spinal nerve
ANS functional anatomy, autonomic conduction paths, sympathetic division, parasympathetic division, autonomic transmitters, and ANS as a whole
functional anatomy consists of motor neurons that conduct impulses from CNS to cardiac and smooth muscle + glandular epithelial tissue; regulates involuntary functions
preganglionic automatic neurons conduct impulses from spinal cord/brainstem to autonomic ganglion
postganglionic neurons conduct from autonomic ganglia to cardiac and smooth muscle and glandular epithelial tissue
autonomic/ visceral effectors tissues where autonomic neurons conduct impulses
autonomic conduction paths consists of 2 neuron relays
neuron relays preganglionic neurons from CNS to autonomic ganglia, synapses, postganglionic neurons from ganglia to visceral effectors
somatic motor neurons conduct all the way from CNS to somatic effectors without intervening synapses
Created by: b.marshall
 

 



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