ANS- autonomic nervous system.pdf - AUTONOMIC NERVOUS...

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AUTONOMIC NERVOUS SYSTEM
ANS - CLASSIFICATIONSympathetic - Thoracolumbar Outflow Parasympathetic - Craniosacral Outflow
3 Divisions of ANS Two divisions innervate same target organs may have cooperative or contrasting effects 1.Sympathetic division prepares body for physical activity increases heart rate, BP, airflow, blood glucose levels, etc 2.Parasympathetic division calms many body functions and assists in bodily maintenance digestion and waste elimination Autonomic tone is the normal rate of activity that represents the balance of the two systems Effects of each depend upon neurotransmitters released
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6 Origin of presynaptic neurons lateral horns of spinal cord (T1-L2) Sympathetic chain ganglia (paravertebral) 3 cervical, 11 thoracic, 4 lumbar, 4 sacral and 1 coccygeal ganglia white and gray communicating rami suspend ganglia from spinal nerve pathways of preganglionic fibers 1.enter ganglia and synapse on postganglionic cell 2.

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