system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How are we able to bleed from anywhere on our body when veins, arteries, and capillaries are in set places?

Yeah, the title

How are we able to bleed from anywhere on our body (when cut/injured)?
gpt
It's possible to poke a needle through several layers of skin and not bleed. Presumably you've had a papercut at some point too?

But beyond that, the veins you can see are the main ones, but they get regressively smaller in a fractal sort of pattern as they branch off from the main ones. If you cut a bigger vein you get more blood out of it.

Think about it this way. Every single square centimetre of your body needs blood to operate. If it doesn't get that blood it dies, so the blood has to be everywhere.