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Kidneys - Online Paper

Kidneys

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 the pH of the
blood. Kidneys play important roles in other bodily functions, such as
releasing the erythropoietin protein, and helping to control blood pressure.

Kidneys are paired, reddish-brown, bean-shaped structures. They are
about eleven centimeters long. Kidneys are located on each side of spine, just
above the waist. They are loosely held in place by a mass of fat and two layers
of fibrous tissue. It is ...

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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 the glomerus. The arterial blood pressure
drives a filtrate of plasma containing salts, glucose, amino acids, and
nitrogenous wastes such as urea and a small amount of ammonia through the
glomerus. Proteins and fats are filtered out of the plasma, to remain in the
normal blood stream. The plasma is now called glorular filtrate. One-hundred
to one-hundred-forty milliliters of this filtrate are formed each minute!

The filtrate passes along a convoluted tibule. The majority of the
water content and some of the dissolved materials are reabsorbed through the
walls of the ...

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Kidneys. (2006, March 25). Retrieved October 24, 2025, from http://www.essayworld.com/essays/Kidneys/43293

"Kidneys." Essayworld.com. Essayworld.com, 25 Mar. 2006. Web. 24 Oct. 2025. <http://www.essayworld.com/essays/Kidneys/43293>

"Kidneys." Essayworld.com. March 25, 2006. Accessed October 24, 2025. http://www.essayworld.com/essays/Kidneys/43293.

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PAPER DETAILS

Added: 3/25/2006 01:12:59 AM
Category: Health & Medicine
Type: Premium Paper
Words: 558
Pages: 3

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