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Multiple Sclerosis Exam Questions And All Answers

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Multiple Sclerosis Exam Questions And All Answers Multiple Sclerosis - ANSWER A chronic, progressive, degenerative disorder of the CNS characterized by demyelination of nerve fibers of the brain and spinal cord. Cause of MS - ANSWER unknown; related to infectious (viral), immunologic and genetic factors. MS is characterized by - ANSWER chronic inflammation, demyelination, and gliosis (scarring) in the CNS. What is the autoimmune response that occurs in MS? - ANSWER The myelin sheaths of the neurons in the brain and spinal cord are attacked. What happens when the myelin starts to become disrupted? - ANSWER Myelin is replaced by glial scar tissue, which forms hard, sclerotic plaques in multiple ares of the CNS. What happens to the nerve impulses after the destruction of the myelin? - ANSWER They slow down. What happens to the impulses when the destruction of axons occur? - ANSWER They become completely blocked, resulting in permanent loss and function.


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