When you donate blood the needle goes into a large, visible vein in your arm or hand but when getting a shot the needle just goes somewhere in your arm.
In: Biology
Not all shots need to go directly into a vein.
If something needs to go into a vein they’ll find one, same as when you give blood. This is common for things like intravenous painkillers, general anesthesia and so on.
For a lot of shots they just need to get it into you and it’ll get absorbed in good time.
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