I was in surgery earlier and remember when the nurse put injected anesthesia and something else through the IV and I could feel the liquid push itself into my vein and it felt like my vein in my hand to elbow would explode.
That got me thinking, how does my body intake so much liquid like the full IV bag without exploding or peeing on the operating table while I’m knocked out.
In: Biology
vessels are elastic to a point, if they shove too much in the wrong one you can cause a blowout. You’ll occasionally see people with massive “bruises” from this happening, or from the nurse putting the needle all the way through the vein. With small ones it’s not the end of the world but still definitely not ideal.
As for the “full bag” part your body absorbs the liquids as they go through your system, so it’s just a matter of not delivering liquid faster than your body can do something with it, it’s not a closed system like oil in your car, it’s constantly depositing material and picking up new things to move around.
That’s really simplified but it’s the gist.
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