If we make skin and muscle cells when we heal cuts and heal/generate bones after breaking them, why wouldn’t we be able to grow a finger if one is cut off?

Question

If we make skin and muscle cells when we heal cuts and heal/generate bones after breaking them, why wouldn’t we be able to grow a finger if one is cut off?

In: 7967

Answer 1

All these analogies and examples are complex and inaccurate. Simply put, all the body does is close holes. If the hole is small enough that it does not affect the shape of the structure, it will heal as good as new. If a finger is cut off, the “hole” at the stump will close off, but the regeneration of a complex structure is something else entirely.