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Autonomic Nervous System (CONTROL CENTRES (Hypothalamus - water balance,…
Autonomic Nervous System
DIVISIONS
autonomic nervous system: motor innervation of smooth muscle, cardiac muscle, and glands
parasympathetic devision
- "rest and digest"
- restore body function
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sympathetic division
- "fight or flight"
- energetic actions
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PATHWAY
preganglionic neurons in the thoracolumbar spinal cord send their motor axons through the adjacent ventral root into the spinal nerve... from there, the preganglionic axons follow one of 3 pathways:
- synapses with a postganglionic neuron in the sympathetic trunk ganglion at the same level
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- ascends or descends in the sympathetic trunk
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- passes through the sympathetic trunk
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CONTROL CENTRES
Hypothalamus - water balance, temperature and hunger
Pons - respiration, cardiac and urinary
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