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Urine is passed down the channel of the renal pelvis and ureter by a succession
of peristaltic waves of contraction that begin in the muscle fibres of the minor
calices, travel out to the major calices and then along the ureter every 10–15 ...
The compartment formed by the renal fascia is relatively open below, so that any
blood, urine, or pus that collects around a kidney as a result of injury or infection
tends to spread downward along a ureter rather than to either side.
The ureters run obliquely through the muscular wall of the bladder for nearly two
centimetres (0.8 inch) before opening into the bladder cavity through narrow
apertures. This oblique course provides a kind of valvular mechanism; when the
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This is the 198215th Edition, in two halves, with the Macropaedia and the Micropaedia. First published in 1768, the publisher is the oldest English-language encyclopedia still in print. Two Scottish ... Read full review