A joke about losing organs

Why can't the human body grow new ones after it lacks organs? The reason is unbelievable.

Some time ago, a crayfish whose pincers were broken by a hot pot caught fire, and the pincers of crayfish can be regenerated after being broken. So why can't human beings, as higher animals, regenerate without arms and legs?

According to related research, this powerful regenerative ability was abandoned by itself in the process of human evolution. After all, as a higher animal, human structure is very complicated, and there is no way to ensure the omnipotence of cell regeneration, such as skin, bones, meridians and various organs.

So, as human beings, is our ability to repair and regenerate really poor?

At present, human skin and nails can grow new parts after being injured, that is, after a part of the liver is removed, it can also be restored to normal operation, but more is to stop bleeding and heal wounds. But it is really a regenerative organ that human beings can't achieve at all.

According to research, human beings cannot grow new organs. First of all, their metabolism is too fast to compound tissues and organs, while cold-blooded animals with extremely slow metabolism can grow new limbs as long as they have enough time!

The human body is constantly updated every day, and the cell repair speed is extremely fast. Even if the severed limb returns to its original position in time, other parts of the body will be directly recognized as heterogeneous by default, and there will be many rejection reactions.

Second, as a higher animal, the human body has a strong defense mechanism. It can inhibit cancer cells in human body, prevent cancer cells from forming malignant tumors, and also affect the development of other cells into organs. In fact, there are a large number of totipotent stem cells in every tissue, but these cells have no wisdom of their own, sometimes they can't control themselves instinctively, and they are also at risk of developing into cancer.

The loss of the original regenerative ability of the human body is itself a strategy for human self-protection.

At present, scientists have tried to master how to induce the growth of stem cells and make them grow into organs and tissues needed by human beings according to the envisaged plan. I believe that this technology will become more and more mature, truly serve human beings, and let the disabled have a better life.