2.5_ The Autonomic Nervous System_ Essential Human Anatomy and Physiology II with Lab- Burtt.pdf

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2/11/20202.5: The Autonomic Nervous System: Essential Human Anatomy and Physiology II with Lab- Burtt1/52.5: The Autonomic Nervous SystemThe Autonomic Nervous SystemTheautonomic nervous system, a part of the peripheral nervous system, is made up of motor neuronsthat control the internal organs automatically and usually without need for conscious intervention. Thesensory neurons that come from the internal organs allow us to feel internal pain. The cell bodies forthese sensory neurons are in dorsal-root ganglia, along with the cell bodies of somatic sensory neurons.The following terminology will be used for the ANS nervous system:Preganglionic axon:(shown in red inFigure 2.47andFigure 2.48, below) A motor neuron cell bodyis located in the spinal cord or brain. The axon synapses with a second motor neuron located in anautonomic ganglion outside the spinal cord.Postganglionic axon: (shown in black inFigure 2.47andFigure 2.48, below) After synapsing in ain an autonomic ganglion, the axon of the ganglionic motor neuron synapses on an effector organ inthe peripheral nervous system.06:05
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Term
Fall
Professor
Dr.Drouin
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