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. Author manuscript; available in PMC: 2018 Sep 28.
Published in final edited form as: Acoust Today. 2017 Winter;13(4):52–59.

Figure 1.

Figure 1

Diagram showing key structures in a cross section of a human kidney. The top of the figure is toward the head and the artery and vein point toward the center of the body. Filtration and fluid extraction occurs in the renal cortex and renal pyramids from blood that enters via the renal artery and, after filtration, exits via the renal vein. The filtrate is then transferred through tubules in the pyramids to the collecting space in the calyx. Urine then passes down the ureter to the bladder.