When the doctor/nurse takes blood from you, why do they try to find a vein, not an artery? And also why is this mainly done on the arm as opposed to other parts of the body?
In: Biology
Try putting a sprinkler on the end of a hose with the water turned on full without kinking it off. Next, turn down the water pressure by 50% and kink it off then try and put the sprinkler on. High pressure vs. Low pressure. Artery vs. Vein.
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