Ask A Question. Browse More Questions. Keep me logged in on this device. Forgot your username or password? I've looked around and cant find an answer. User Info: lpenrose lpenrose 12 years ago 2 You slowly regain life, just like you do mana. Who wants to play with me? How to efficiently clear bosses as a lightning sorc? RTB Member. Jun 21, 5, 2 Dimension of Numbers. Again I stuffed up in my calculations, and a simple one at that too.
I don't know where I got 0. TheJarulf Banned. Jan 4, 0 0. Orphan said:. Click to expand TheJarulf said:. Regeneration means the regrowth of a damaged or missing organ part from the remaining tissue.
As adults, humans can regenerate some organs, such as the liver. If part of the liver is lost by disease or injury, the liver grows back to its original size, though not its original shape. And our skin is constantly being renewed and repaired.
There are many animals that can regenerate complex body parts with full function and form after amputation or injury. Invertebrates animals without a spinal cord such as the flatworm or planarian can regenerate both the head from a tail piece, and the tail from a head piece.
Among vertebrates animals with a spinal cord , fish can regenerate parts of the brain, eye, kidney, heart and fins. Frogs can regenerate the limb, tail, brain and eye tissue as tadpoles but not as adults. And salamanders can regenerate the limb, heart, tail, brain, eye tissues, kidney, brain and spinal cord throughout life.
How do these regenerative animals regrow such complex structures? After amputation, stem cells accumulate at the injury site in a structure called the blastema. An important subject of ongoing research is how signals from the injury site cause the stem cells to form the blastema and start dividing to rebuild the missing part. And what about the stem cells themselves?
Do the animals use a single type of stem cell in the blastema that can differentiate into many different types of tissues called a multipotent stem cell. Or is a separate set of stem cells responsible for making each of the different tissues needed to make up the new body part?
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