Neurofibrillary tangles are:
A) distributed evenly throughout the cortex.
B) collapsed proteins that normally hold neurons in place and transport nutrients.
C) first accumulated in the cortex of patients with Alzheimer's disease.
D) an abnormal byproduct of a common protein.

Question

Quizplus · Accepted Answer

Neurofibrillary tangles are composed of tau protein, which normally helps stabilize microtubules in neurons. In Alzheimer's disease, these proteins become hyperphosphorylated and collapse, disrupting their normal function.

Neurofibrillary Tangles Are