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19 Cards in this Set
- Front
- Back
Visceral motor pathways
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2 neuron system
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visceral sensory pathways
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1 neuron system
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Sympathetic Division of ANS
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T1-L2; Thoracolumbar; fight or flight; neurons are short:long
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Parasympathetic Division of ANS
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brain stem or S2-S4; craniosacral; feed or breed; neurons are long:short
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Sympathetic innervation of Heart
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Origin T1-T4; synapse in sympathetic chain, exit via cervical or thoracic sympathetic cardiac nerves.
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Parasympathetic innervation of Heart
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Vagus nerve; synapse in cardiac plexus.
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Sensory info from heart
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pain carried by sympathetic nerves; cardiac reflexes follow PS.
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Referred pain
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CNS perceives visceral pain from heart to be somatic pain from T1-T4 dermatome.
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Innervation of lungs
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Same pattern as heart. T1-T4. Sympathetic Trunk; R and L vagus nerves. Anterior and Posterior pulmonary plexus.
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Sympathetic innervation of foregut
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T5-T9; greater splanchnic nerve synapses in celiac ganglion.
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PS innervation of foregut
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Vagus nerve goes through celiac plexus but synapses in wall of organ.
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Sympathetic innervation of midgut and kidney
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T10-T11, lesser splanchnic nerve synapses in Aorticorenal or Superior Mesenteric Ganglion
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PS innervation of midgut
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Vagus nerve goes through plexus but synapses in organ wall.
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Sympathetic innervation of hindgut
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L1 to L2; lumbar splanchnic nerve synapses in Inferior Mesenteric Ganglion.
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PS innervation of hindgut
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S2-S4; pelvic splanchnic nerves does not go through ganglion. synapses in organ wall.
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Innervation of adrenal gland
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sympathetic is preganglionic neurons from T5-T8.
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Sympathetic vs PS innervation
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PS has no effect on skin or adrenal gland
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Splanchnic nerves that exert influence in thorax synapse
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in sympathetic chain
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Splanchnic nerves that exert influence in abdomen synapse
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in prevertebral ganglion
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