Why does it take longer for wounds inside your body to close than wounds outside it?

Question

Since external wounds are exposed to, well, the outside, shouldn’t they heal slower? Why is it that internal wounds take longer and sometimes may not even heal at all without medicine, like fissures and canker sores?

In: Biology

Answer 1

It generally has to do with moisture. If the wound is wet the infection has an easier time to survive.

Drying out a wound reduces the ability of the bacteria to survive. In fact, this is why dries meats do not rot. And why mummies exist.