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 is used with a fulcrum or pivoting point that multiplies the force exerted on a load. This is very beneficial when you want to have something done with minimal force. There are three classes in fulcrums. Class 1 is where the fulcrum is located between the load and the force applied.nother place where a wheel and axel could be used is a pulley. A pulley is a simple machine that consists of a wheel and axel or shaft and something of a belt. The wheel and axel or shaft could have a grove, but not in all cases.