Sixty-year-old Sam is part of a research program designed to predict future diseases and disorders from brain scans completed yearly. If researchers determine that the brain scans reveal a loss of cells in the substantia nigra, which disorder would they predict that Sam will develop?

Question

Quizplus · Accepted Answer

Loss of cells in the substantia nigra is a characteristic of Parkinson's disease. PKU and Tay-Sachs are genetic disorders that are not related to loss of cells in the substantia nigra. Alzheimer's disease is characterized by the accumulation of beta-amyloid plaques and tau tangles in the brain, not loss of cells in the substantia nigra.

Sixty-Year-Old Sam Is Part of a Research Program Designed to Predict