Tissues such as skeletal muscle and brain neurons--that are in a state of termin

Question

Tissues such as skeletal muscle and brain neurons--that are in a state of terminal differentiation so that they no longer divide are: a.) never replaced and the cell numbers decrease with aging b.) sometimes replaced by these cells entering the cell cycle again c.) sometimes replaced by stem cells, but that rate decreases with aging d.) are always replaced by the cell division of their neighbors--when they signal their inability to function correctly, but they have a higher death rate in older animals.

Explanation / Answer

Answer: Are always replaced by the cell division of their neighbors--when they signal their inability to function correctly, but they have a higher death rate in older animals.

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