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Author Question: Give three examples of gross and histological changes in the brain tissue in Alzheimer disease. ... (Read 61 times)

RRMR

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on: Jun 25, 2018
Give three examples of gross and histological changes in the brain tissue in Alzheimer disease.
 
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Question 2

Explain why identical twins are always of the same sex.
 
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InfiniteSteez

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Reply #1 on: Jun 25, 2018
Answer to Question 1

Progressive loss of neurons with atrophy of the cerebral cortex; development of neurofibrillary tangles from the degenerative changes of the neurofilaments located within the cytoplasm of the neurons; presence of neuritic plaques, which are masses of broken, thickened nerve filaments that surround an acellular protein material, beta amyloid. The greater the number of neurofibrillary tangles and neuritic plaques, the more severe the disease is.

Answer to Question 2

The twinning is a result of the splitting of a single fertilized ovum.


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