Do all humans have the same number of veins and arteries? If so, how does the body know how many and where to make these veins and arteries?
In: Biology
There are some veins in the inner side of the elbow that sometimes differ. The medial cubital and medial antebrachial veins. I don’t remember the exact ways (there are 5 or 6 ways of which 2 are common), but I know in some cases there’s a vein missing or just very underdeveloped. I remember this because my one arm doesn’t have one of the veins but the other does. It always frustrates doctors when they try to put an IV in.
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