What makes internal bleeding different from the blood that regularly flows through the body and comes out when you get a paper cut or some form of surface scratch/injury?
In: Biology
The reason a papercut is not too bad is because the amount of blood that comes out is very little as the capilary blood vessels that are cut is very tiny. When you have issues with blood loss it is usually because a bigger artery have been cut which can cause huge amount of blood to be lost so that you do not have much remaining blood circulating through your body delivering oxygen from your lungs to your cells. Internal bleeding is a type of blood loss however in this case the blood that is leaking out does not end up on the outside of your body but rather will fill up areas between your organs. The internal bleeding version of a paper cut would be a bruise. If it is big it can still cause the same issues with blood loss as the blood while techically it is inside your body it is not part of the circulation system and will not flow around the body delivering oxygen and other neutrients. There are a few things to be worried about with internal bleeding. Firstly it is harder to see from the outside, there is no big flow of red blood pointing to the issue. Secondly the blood could also squash other organs making them stop working, this is mostly an issue for the lungs and brain. But big internal bleeding anywhere would still cause issues with blood loss.
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