aort/o {Ans: aorta}vena cava {Ans: large-diameter vein that gathers blood from the body and returns it to the heart}systemic circulation {Ans: circulation of blood from the heart to the rest of the body}thrombolytic {Ans: drug that breaks down clots}phlebotomist {Ans: one who draws blood}phleb/o {Ans: vein}