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Lecture 9 Sympathetic Neurons

Lecture 9 Sympathetic Neurons - How Real Neurons Work...

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How Real Neurons Work: Sympathetic Neurons
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Determinants of Neural Network Function Wiring Diagram - how the neurons are connected together Nature of Synaptic Inputs - large or small, excitatory or inhibitory Intrinsic Electrophysiological Properties - firing properties of the neuron - determined by the complement of voltage-gated ion channels
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Intermediolateral nulcei Ventral root White communicating ramus Paravertebral ganglia Target Prevertebral ganglia Target
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Paravertebral Ganglia Prevertebral Ganglia Preganglionic Preganglionic DRG Target Tissue Target Tissue Sensory Enteric Neuron
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Phasic neurons receive a single ‘strong’ synaptic input from preganglionic nerves
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Tonic neurons receive multiple EPSPs from both efferent fibers and peripheral afferent fibers
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DRG Target organ Relay Neuron - Phasic Integrative Neuron - Tonic Target organ single strong EPSP multiple weak EPSPs
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Phasic Tonic
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Phasic Tonic
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Phasic Tonic
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