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
Except for the outer layers of skin, your body is pretty wet. It likes being wet. The skin keeps the wetness in and the dryness out.
When you get wound on the outside of your body, the protective layer of your skin is broken, and the cells that thrive in wetness are now exposed to the dry outside environment. They don’t like it.
When you put something like neosporin and a non-sticking bandage on a wound, that dressing is acting like your skin. The cells are happily back in their wet environment and can function and heal properly—quicker and with less scarring.
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