NURS 6501: Final Exam: Please contact Assignment Samurai for help with NURS 6501: Final Exam or any other assignment. Email: assignmentsamurai@gmail.com     In Alzheimer disease, what is the significance of plaques and tangles found in the brain? Group of answer choices

• They are definitive indicators of the progression of Alzheimer disease.
• They are protective factors that prevent the progression of the disease.
• They are only found in the late stages of Alzheimer disease.
• They are associated with Alzheimer disease, but it's unclear whether they are a cause or a result of the disease.

  The correct answer is: They are associated with Alzheimer disease, but it's unclear whether they are a cause or a result of the disease.   In Alzheimer disease, plaques (which are composed of amyloid-beta protein) and tangles (composed of tau protein) are characteristic features found in the brains of individuals with the condition. However, their exact role in the disease process is not fully understood. They are considered associated with Alzheimer disease, but it is unclear whether they directly cause the disease or are a result of the neurodegenerative process.   Here’s why the other options are incorrect: They are definitive indicators of the progression of Alzheimer disease: While plaques and tangles are hallmarks of Alzheimer disease, their presence alone is not a definitive indicator of disease progression, nor are they always indicative of worsening symptoms.   They are protective factors that prevent the progression of the disease: Plaques and tangles are not protective; rather, they are thought to be harmful and may contribute to brain cell damage and cognitive decline.   They are only found in the late stages of Alzheimer disease: Plaques and tangles can be present in the brain in the earlier stages of Alzheimer disease, not just in the late stages.   Thus, the plaques and tangles are associated with Alzheimer disease, but whether they cause or are a result of the disease remains unclear.