I’m not really too sure about this in real life since I don’t see fights that often, but why do movies and cartoons show that? For example, I saw a cartoon where someone smacked the other person with a baseball bat. Suddenly they’re laying on the ground, bleeding on the back of the head.
I get areas where there’s a passage way like your nose, mouth, and even ears but why do random spots on the head bleed when no cuts were involved? How does the skin rips open after a big blow to it?
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Less cut than split or tear, depending on the nature of the hit. Skin is a marvelous organ, but ours isn’t all that thick and on your scalp it’s held fairly taught over the skull and shot through with a lot of vessels.
When you take a hit to the head, especially if you hit a narrow surface where all the impact is focused in a narrow area, it can take enough force that it is split apart. Other parts of your body generally have fat and muscle under them, and places like your elbows where it’s not true have less in the way of vessels close to the surface. But on your scalp there’s a lot of them and it’s pinched between whatever you hit and your skull so its easy to split.
If you catch a glancing blow hard enough it can also be torn. Its attached to the skull pretty firmly all the way through, and again the pinching plays in, so it can stretch and deform as easily as say…on your chest or stomach. So apiece caught by something may tear loose to provide that give since it can’t stretch and flex readily.
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