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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There are six types of simple machines: lever, pulley, inclined plane, wedge, screw, and wheel and axle. Each machine affects the direction or the amount of effort needed to do work. Most mechanical machines, such as automobiles or power tools, are made up of hundreds of parts. However, no matter how complex a machine is, it is composed of some combination of these six simple machines.