Multiple Sclerosis Practice Test Questions with Correct Answers

Multiple Sclerosis Practice Test Questions with Correct 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. Motor symptoms of MS - Answer--weakness or paralysis of the limbs, trunk, or head. -diplopia (double vision) -scanning speech -spasticity of the muscles Sensory symptoms of MS - Answer--numbness and tingling and other parethesias -patchy blindness (scotomas) -blurred vision -vertigo, tinnitus, and decreased hearing -chronic neuropathic pain -Radicular (nerve root) pain particularly in the low thoracic and abdominal regions Lhermitte's sign - Answer-A transient sensory symptom described as an electric shock radiating down the spine or into the limbs with flexion of the neck.