The ureter is the structure through which urine is conveyed from the kidney to the urinary bladder. To learn more about the structure of the kidney, see our simple (labelled) diagram of a kidney nephron.reter: The ureter is the structure through which urine is conveyed from the kidney to the urinary bladder. To learn more about the structure of the kidney, see our simple (labelled) diagram of a kidney nephron. Terms of Use. Today's Study Tip: Don't waste time worrying about other people's progress.
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A lever is a simple machine that makes work easier for use; it involves moving a load around a pivot using a force. Many of our basic tools use levers, including scissors (2 class 1 levers), pliers (2 class 1 levers), hammer claws (a single class 2 lever), nut crackers (2 class 2 levers), and tongs (2 class 3 levers). It all depends on where the fulcrum point is as compared to the load point.