I stacked my bike and split my head right open. About three weeks later the scab falls off and the skin is sealed over, like magic! How does it all work? How does the brain know that part of the body is injured and needs repair, or does the brain know at all? What kind of signals between brain/cells/body are involved.
Sorry it's probably a basic question for a biologist, but I come from a different field and have always wondered about this amazing process. It's also a very hard topic to google about, because most results are about spiritual healing, crystals, prayer and a lot of pseudoscience rubbish.