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Biology / Campbell Biology 10 / Chapter 44 / Problem 11

Campbell Biology | 10th Edition | ISBN: 9780321775658 | Authors: Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson

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The marine iguana (Amblyrhynchus cristatus), which spends long periods under water

Chapter 44, Problem 11

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QUESTION:

The marine iguana (Amblyrhynchus cristatus), which spends long periods under water feeding on seaweed, relies on both salt glands and kidneys for homeostasis of its internal fluids. Describe how these organs together meet the particular osmoregulatory challenges of this animals environment.

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QUESTION:

The marine iguana (Amblyrhynchus cristatus), which spends long periods under water feeding on seaweed, relies on both salt glands and kidneys for homeostasis of its internal fluids. Describe how these organs together meet the particular osmoregulatory challenges of this animals environment.

ANSWER:

The salt glands, located in the iguana’s head, are specialized for excreting excess salt, which accumulates in their blood and tissues due to their diet that is high in salt. The salt glands produce hypertonic fluid that has about three times the concentration of sodium chloride than the blood does. The hypertonic fluid then passes through a duct connecting the gland t

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