The development of Parkinson's disease is now understood to be a result of a(n)__________.

Question

Quizplus · Accepted Answer

The development of Parkinson's disease is primarily caused by a dopamine deficiency in the brain due to the degeneration of dopamine-producing neurons in the substantia nigra region of the brain. This dopamine deficiency leads to symptoms such as tremors, muscle rigidity, and difficulty with movements. Therefore, option C is the correct answer. Options A and D are incorrect because endorphins are not directly related to Parkinson's disease development. Option B is partially correct, as over-stimulation of dopamine receptors can lead to side effects such as dyskinesia, but it is not the primary cause of Parkinson's disease.

The Development of Parkinson's Disease Is Now Understood to Be