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Kidneys
Part I of Essay
In vertebrates, are the two major organs of excretion. Excess
water, toxic waste products of metabolism such as urea, uric acid, and inorganic
salts are disposed of by in the form of urine. are also largely
responsible for maintaining the water balance of the body and .... Part II of Essay
.... a
dark band along the outer border, about one centimeter in thickness, and the
inner medulla. The medulla is divided into 8 to 18 cone-shaped masses of tissue
named renal pyramids. The apex of each pyramid, the papilla, extends into the
renal pelvis, through which urine is released from the kidney tissue. The
cortex arches over the bases of the pyramids (cortical arches) and extends down
between each pyramid as the renal columns.
Urine passes through the body in a fairly complex way. The initial site
of urine production in the body is t ....
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Words: 558 - Pages: 3
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