Physiology Parkinson’s disease is caused by the degeneration of which one of the following biochemically distinct neural pathways? A Nigrostriatal adrenergic B Nigrostriatal dopaminergic C Intrastriatal cholinergic D Intrastriatal gabaergic 💡 Explanation Parkinson's disease is caused by the degeneration of which one of the following biochemically distinct neural pathways? ✓ Correct Answer: B. Nigrostriatal dopaminergic