What Disorder Involves an Immune Response That Affects the Myelin Coating on Axons Throughout the Spinal Cord and Brain, Triggering Inflammation and Leaving Scars?What disorder involves an immune response that affects the myelin coating on axons throughout the spinal cord and brain, triggering inflammation and leaving scars?Multiple ChoiceAlzheimer diseaseMultiple sclerosisMuscular dystrophyCerebrovascular accident

In the pathogenesis of Multiple Sclerosis:Question 59Select one:a.All these answers are correct.b.Inflammation (mediated by macrophages and lymphocytes) leads to myelin and axon destruction.c.Regions of brain tissue are replaced with connective tissue, i.e. "scarring".d.Attempted regeneration may occur in a shadow plaque.e.Plaques develop in the brain that may increase in size over time.

Question 5 (~150 words)Discuss the role of immune cells, such as T cells, in the body's defense mechanisms.Question 6 (~150 words)Explain the role of immune cells in attacking the myelin sheath and its impact on CNS function

In Guillain-Barre Syndrome, the Immune System Attacks and Degrades the Myelin Sheath of PNS Axons. Predict the Effect This Will Have on Nerve Impulse and Motor Function.In Guillain-Barre syndrome, the immune system attacks and degrades the myelin sheath of PNS axons. Predict the effect this will have on nerve impulse and motor function.Multiple ChoiceLost insulation from myelin will cause neurons of the PNS to be hyper-excitable and muscular spasms will result.The brain will slowly degrade and various brain functions will be lost, including motor functions.Lost insulation from myelin will cause neurons of the PNS to lose saltatory conduction, resulting in poor muscle function.Motor signals will not be sent from the brain down the efferent pathway because the brain cannot generate them.

Which type of cells form the myelin sheaths around axons?a) Schwann cellsb) Astrocytesc) Adjacent nerve cellsd) Muscle cells

Schwann’s cells begin to form myelin sheaths around axons in the peripheral nervous systemGroup of answer choicesafter birth.when neurons are injured.during the early onset of Alzheimer’s disease.only in response to electrical stimulation by neuroglial cells.during fetal development.