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.

Which one of the following statements relating to multiple sclerosis (MS) is correct?Question 30Select one:a.The pathogenesis is largely due to B-cells destroying myelin sheaths surrounding neurons.b.Decreased blood brain barrier permeability may contribute to a greater incidence of MS.c.The incidence is lowest in countries far from the equator.d.MS affects females less frequently than males.e.It is a disease that affects neurons of the brain and central nervous system.

Which of these statements about Multiple Sclerosis (MS) is/are correct?W. Typically, neurons within the Peripheral Nervous System (PNS) are most  affected.X.  It is classified primarily as a Type III hypersensitivity (immune complex-mediated) disease.Y.   There is typically no neuronal axon destruction at all seen in MS.Z.  Inflammation in and around the optic nerve (optic neuritis) is a common early symptom.Question 32Select one:a.if only W, X and Y are correctb.if only W and Y are correctc.if only X and Z are correctd.if only Z is correcte.if all are correct

Which of the following statement about Multiple Sclerosis (MS) is TRUE?Question 1Answera.It is caused by autoimmune attack to the myelin sheath. b.Obesity and genetics are believed to be strongly associated with MS. c.Sympotoms develop slowly over time and tend to affect the lower limb first.d.It tends to affect both side of the body.

Multiple sclerosis is caused by T cells that recognize antigens on myelin. These self-reactive T cells then attack and destroy the myelin covering on neurons in the CNS. Based on this, multiple sclerosis is an example of a:Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer.aType I hypersensitivitybType II hypersensitivitycType III hypersensitivitydType IV hypersensitivity

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