eli5: how come when someone gets cut in the neck, blood comes out like it’s from a hose and people faint quickly? Does blood travel fast in that area?
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Those are your jugular veins. They’re the main entry and exit road of blood to and from your brain, and their importance is shown during one of these injuries. With no blood coming through those veins (on each side of your neck) your brain will quickly become deoxygenated from the present blood becoming “stale”, this particular wound loses too much blood, though, so when you faint you basically just die all at the same time.
Edit: my terminology is off, refer to the reply to this made by u/v1perz53
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