Multiple Sclerosis Is a Disease That Involves

question 29

Multiple Choice

Multiple sclerosis is a disease that involves:

• A)the degeneration of patches of the myelin sheath that causes the transmission of neural messages to be slowed or interrupted.
• B)an abnormal increase in the thickness of the myelin sheath, blocking the release of neurotransmitters.
• C)the gradual decline in the ability of neurons to produce glial cells.
• D)dendrites becoming brittle and breaking.

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Definitions:

Primary Consumers

Organisms that feed directly on producers in a food chain, typically herbivores that eat plants.

Trophic Level

The position an organism occupies in a food chain, indicating its level of feeding and energy transfer.

Bacteria

Microscopic, single-celled organisms found in virtually all environments, some of which can cause disease.

Water Table

The level below which the ground is saturated with water, an important concept in hydrology and environmental science.