INBDE (Integrated National Board Dental Examination) Practice Exam

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What condition is associated with substantia nigra, tremors, stiffness, loss of motor coordination?

  1. Parkinson's Disease

  2. Alzheimer's Disease

  3. Huntington's Disease

  4. Multiple Sclerosis

The correct answer is: Parkinson's Disease

Parkinson's Disease is the correct answer because it is the only condition out of the choices given that is associated with the substantia nigra, which is a part of the brain responsible for producing dopamine. The other conditions listed do not directly affect the substantia nigra. Alzheimer's Disease primarily affects the cerebral cortex, Huntington's Disease primarily affects the basal ganglia and Multiple Sclerosis primarily affects the central nervous system. These conditions do not commonly present with symptoms such as tremors, stiffness, and loss of motor coordination. Therefore, A is the only correct option for this question.

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