Question

The cause of multiple sclerosis is best described as:

a. A destructive process of the never fiber protecting myelin
b. An intracranial viral infection
c. Inflammation of the brain and/or spinal cord
d. An autoimmune disorder that destroys muscle fibers

Answer 1

Multiple sclerosis is an autoimmune disorder that attacks the myelin sheath of nerve fibers in the CNS, leading to a wide range of neurological symptoms and no single cause has been identified.

Step-by-step explanation:

The cause of multiple sclerosis (MS) is best described as an autoimmune disorder that leads to the destruction of the myelin sheath that insulates nerve fibers in the central nervous system (CNS). This results in disrupted neuronal signaling and various neurological symptoms. MS involves the infiltration of immune cells across the blood-brain barrier, where they cause inflammation and attack the myelin, leading to demyelination and neuron degeneration. MS can manifest in physical disability, visual disturbances, muscle weakness, difficulties with coordination and balance, as well as cognitive and memory problems. Both genetic and environmental factors can contribute to the disease, but no single cause has been identified, making treatment and prevention challenging.