1) What cells in the body do not regenerate and why?
For the past several decades, scientists belived that brain cells do not regenerate . take a look of this
http://www.medindia.net/News/view_news_main.asp?x=13281
But now some researchs show that they can regenerate in some case
http://www.princeton.edu/pr/pwb/99/0405/brain.htm

2) What cells the body are multinucleated and why?
Skeletal muscle fibers are multinucleated, with the cell’s nuclei located just beneath the plasma membrane. In the developmental process, a skeletal muscle fiber is made by combining cells, so it develops into a multinucheated cell.

Hope that helps

Next time, try to do your own homework. These are things that can be found on the internet.

i remember this question has been answered previously. Try the search function on this forum 😉

If i don’t remember wrongly, my lecturer told us that heart cells do not regenerate, which is why you don’t hear of cases of "cancer of the heart".

then you have to read this: 😆

http://www.biologynews.net/archives/200 … cells.html