PPT_Chapter_25 - Muscle Relaxants Chapter 25 Copyright 2013 Wolters Kluwer Health | Lippincott Williams Wilkins Regulation of Movement and Control of

PPT_Chapter_25 - Muscle Relaxants Chapter 25 Copyright 2013...

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Copyright © 2013 Wolters Kluwer Health | Lippincott Williams & Wilkins Muscle Relaxants Chapter 25
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Copyright © 2013 Wolters Kluwer Health | Lippincott Williams & Wilkins Regulation of Movement and Control of Muscles Spinal Reflexes Influences from Upper-level CNS Areas Basal ganglia Cerebellum Cerebral cortex
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Copyright © 2013 Wolters Kluwer Health | Lippincott Williams & Wilkins Types of Spinal Reflexes Simple Involving an incoming sensory neuron and an outgoing motor neuron Complex Involving interneurons which communicate with the related centers in the brain
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Copyright © 2013 Wolters Kluwer Health | Lippincott Williams & Wilkins Reflex Arc Showing Pathway of Impulses
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Copyright © 2013 Wolters Kluwer Health | Lippincott Williams & Wilkins Fibers in the CNS Controlling Different Types of Movements Pyramidal Tract Controls precise intentional movements Extrapyramidal Tract Modulates unconsciously controlled muscle activity Allows the body to make automatic adjustments in posture, position, and balance
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Copyright © 2013 Wolters Kluwer Health | Lippincott Williams & Wilkins Neuromuscular Abnormalities Muscle Spasm Often results from injury to the musculoskeletal system Caused by the flood of sensory impulses coming to the spinal cord from the injured area Muscle Spasticity Result of damage to neurons within the CNS May result from an increase in excitatory influences or a decrease in inhibitory influences within the CNS
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Copyright © 2013 Wolters Kluwer Health | Lippincott Williams & Wilkins Action of Skeletal Muscle Relaxants Most Relaxants
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