ANS - cells of adrenal glands (kidneys) release NE into...

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Terminology Preganglionic neuron - from CNS to autonomic ganglia Postganglionic neuron - from autonomic ganglia to effector Autonomic ganglia: Sympathetic division Sympathetic chain (vertebral chain, paravertebral) Prevertebral Parasympathetic division Terminal
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Structure of Sympathetic division: Preganglionic neurons in lateral gray horns of thoracic and lumbar spinal segments (Thoracolumbar outflow) Sympathetic chain; White ramus - preganglionic axon into chain Gray ramus - postganglionic axon out of chain SCG - innervates areas of head MCG - " heart ICG - " Thoracic portion - heart, lungs, bronchi, upper viscera Lumbar portion - lower (pelvic) viscera Splanchnic nerves - pass through chain w/o synapse run to prevertebral ganglia Greater splanchnic - pass through chain and prevertebral ganglion, synapse on medullary
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Unformatted text preview: cells of adrenal glands (kidneys) release NE into blood. General physiologic effects = fight or flight responses Structure of Parasympathetic division : Preganaglionic neurons in cranial nerves III, VII, IX, X and sacral spinal segments (Craniosacral outflow) CN X produces 80% of parasympathetic impulses Sacral portion innervates pelvic viscera General physiologic effects = rest and digest Neurotransmitters : Cholinergic fibers release ACH: Sympathetic preganglionic Sympathetic postganglionic innervating most sweat glands Parasympathetic pre and postganglionic Adrenergic fibers release NE: Sympathetic postganglionic (except to sweat glands) Medullary cells also secrete NE when stimulated by the Greater Splanchnic nerve. Sympathetic Parasympathetic...
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ANS - cells of adrenal glands (kidneys) release NE into...

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