Multiple sclerosis is a disease that involves: group of answer choices

1. the degeneration of the myelin sheath, slowing or interrupting the transmission of neural messages.
2. dendrites becoming brittle and breaking. multiple fractures in the sclerotic membrane, which causes the neuron's cell body to collapse and die.
3. an abnormal increase in the thickness of the myelin sheath, blocking the release of neurotransmitters.