Why can't nervous and cardiac muscle tissues regenerate?

Answer 1

nervous tissue: it is made up of nerve cells or neurons. neurons cannot undergo cell division (mitosis) because they lack the apparatus required for this.i.e They have temporarily exited from the cell cycle after mitosis and entered a "paused or quiescent" state called G0. Same for cardiac muscles made of such cells which lose the capacity to divide.

Answer 2

Both nervous and cardiac muscle tissues do regenerate. The tissues will be replaced by cells that are less differentiated than a normal neural or cardiac cell. However, the rate at which the cells can replace damaged cells is incredibly low, and the number of these fibroblasts is low, so the damage done tends to remain. Research is being done so that undifferentiated cells (stem cells) may one day be used to replace the damaged cardiac or neural cells. The stem cells (not necessarily embryonic, there are adult populations of stem cells that have been shown to have the ability to be directed to differentiate into specific cell types) will be grown outside of the body, then injected to replace the damaged tissue.

Answer 3

Stem cell research has been successful in this field. Who knows what the future might hold. Nerves can regenerate, but it is such a slow process one can lose the patient or the patient can lose a limb, in the meantime.

This is an exciting era in medical research. So much that was not understood is now becoming clear. And just how much is not known is also becoming quite clear.

Answer 4

I believe it is because they both lack the normal mechanisms found in regular body cells that stimulate Mitosis and cellular replication.

There is research being done though to see if neural tissue regenreates and I think the general consensus is that it does.

You may want to look up information about that online like on WebMD or something like that. Maybe a medical journal like JAMA may help.

Answer 5

becouse we

didnt do a gennome update yet

humans, 1.2