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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Thus, Turing machines prove fundamental limitations on the power of mechanical computation. While they can express arbitrary computations, their minimalistic design makes them unsuitable for computation in practice: actual computers are based on different designs that, unlike Turing machines, use random access memory. Turing machine is a general example of a CPU that controls all data manipulation done by a computer. More specifically, it is a machine (automaton) capable of enumerating some arbitrary subset of valid strings of an alphabet; these strings are part of a recursively enumerable set.