You Know You're a Nurse When (Part 3)

You spell materials incorrectly while writing a paper, and your spell check suggests that you try, "arterials," which isn't actually a word, but sort of looks like arterioles, the small version of arteries in your body that can self-regulate their diameter based on local chemical factors. Which, even if you aren't a nurse is really cool. Basically, when your tissues don't get enough oxygen and have too much carbon dioxide in them, they make these little arteries get bigger so they can get more blood supply, and therefore more oxygen. Fascinating, don't you think?