How come when i hit my head i get a bump, not a dent?
In: Biology
This is essentially the plot of Cells at Work Season 2 Episode 1. Really good quick ELI5 of it here: https://youtu.be/yGkNeihCH7g?t=353
To summarize, you start bleeding without an open wound and it just pools up under your scalp, since your scalp has good blood flow the bump can get pretty noticeable
When you get an injury, your body immediately sends blood and, therefore, white blood cells to the spot to begin the healing process. This can lead to swelling and bruising, thus causing a “bump.”
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When you get a bump, your skull (bone) has not been fractured.
When you have a dent, your skull (bone) has been broken and most likely you will not be awake.
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