Final answer:
Alzheimer's disease is a progressive, fatal form of dementia. It is characterized by the presence of abnormal clumps called amyloid plaques, tangled brain fibers called neurofibrillary tangles, and an overall shrinking of brain volume. The disease is neurodegenerative.
Step-by-step explanation:
True. Alzheimer's disease is a progressive, fatal form of dementia. It is characterized by the presence of abnormal clumps called amyloid plaques, tangled brain fibers called neurofibrillary tangles, and an overall shrinking of brain volume. The disease is neurodegenerative, meaning that the damage to the brain becomes more extensive over time. It is typically diagnosed after death when brain tissue can be examined for plaques and tangles. Alzheimer's disease affects millions of people worldwide and research is being conducted to better understand its causes and develop potential treatments.