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
Ooh, just covered this in the capstone class for my major.
Veins are *significantly* more compliant (stretchy) than arteries or capillaries. At any given time, most of your blood is in your veins, and they’ll expand or contract depending on your current blood volume + osmolarity.
If you get an infusion through an IV? It’s fine. Your veins can handle a little stretch while the fluid gets into your circulatory system.
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