A Person with Parkinson's Disease Experiences Severe Difficulty in Initiating

question 49

Multiple Choice

A person with Parkinson's disease experiences severe difficulty in initiating movement due to the depletion of the chemical dopamine in the brain.Injecting dopamine into this person's bloodstream has no effect on the symptoms because

• A)the body recognizes that the injected dopamine is artificial.
• B)dopamine cannot directly cross the blood-brain barrier into the brain.
• C)myelin insulates neurons from foreign substances in the bloodstream.
• D)this substance cannot be transported into the brain by the sodium-potassium pump.

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Definitions:

Four Tests

A set of criteria or checks used to evaluate the validity or reliability of a concept, argument, or piece of evidence.

Comparative Inferences

The process of deducing conclusions by examining the similarities or differences between two or more objects, scenarios, or datasets.

Comprehensiveness

Refers to the quality of including all or nearly all elements or aspects of something.

Comparative Reasoning

Evaluating two or more objects, ideas, or situations to identify similarities and differences.