In Multiple Sclerosis,what Happens at the Level of the Neuron

question 180

Multiple Choice

In multiple sclerosis,what happens at the level of the neuron?

• A) The myelin sheath deteriorates.
• B) The gates in the membrane are fused shut.
• C) Sodium can no longer cross the membrane.
• D) The neuron stops making neurotransmitters.

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Definitions:

Decomposers

Microbial heterotrophs that break down dead organic material and use the decomposition products as a source of energy. Also called saprotrophs or saprobes.

Ecosystem

A community of living organisms in conjunction with the nonliving components of their environment, interacting as a system.

Available Nutrients

Nutrients present in the environment that can be readily absorbed and used by organisms for growth and metabolism.

Eukaryotic

Pertaining to cells and organisms that have a nucleus enclosed within membranes, distinct from prokaryotic cells which lack such a nucleus.