Kidneys
Beginning of paper
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. Kid ....
Middle of paper
.... organ.
The cut surface of the kidney reveals two distinct areas: the cortex- 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 ....
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Word count: 558
Page count: 3 (approximately 250 words per page)
