Question
An area has been marked in the coronal section of the brain below. Defect in this area will lead to what pathology?
| A. |
Alzheimer’s disease
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| B. |
Huntington’s chorea
|
| C. |
Paralysis agitans
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| D. |
Dementia
|
Show Answer
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Correct Answer � C
Explanation
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|
Answer- C. Paralysis agitans
- The area marked with the star is a dark, blackish area in the region of mid-brain, which represents substantia nigra.
- Lesions of substantia nigra produce Parkinson’s disease, also called paralysis agitans.
- Paralysis agitans, which means “shaking palsy,” is another term used for Parkinson’s disease. In Parkinson’s disease, the levels of dopamine in the substantia nigra and striatum decrease dramatically as a result of the degeneration of pars compacta neurons.
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