In multiple sclerosis, a patient:

A) loses coordination due to the replacement of myelin with scar tissue.
B) accumulates neurofibrillary tangles in the brain resulting in dementia.
C) suffers tremors due to overly rapid and spontaneous firing of neural impulses.
D) loses the ability to move because of motor neuron degeneration.
E) suffers depression due to abnormal secretion of neurotransmitters.

Multiple Sclerosis

A chronic autoimmune condition where the immune system attacks the protective covering of nerves in the central nervous system.

Myelin

A fatty substance that surrounds nerves, providing insulation and helping to speed neural transmission.

Scar Tissue

The fibrous tissue that forms over a wound as it heals, replacing normal skin or tissue but lacking the original structure's full function.