Campbell Biology, Books a la Carte Plus Mastering Biology with eText -- Access Card Package (10th Edition)
Campbell Biology, Books a la Carte Plus Mastering Biology with eText -- Access Card Package (10th Edition)
10th Edition
ISBN: 9780133922851
Author: Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson
Publisher: PEARSON
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Chapter 42.1, Problem 2CC

Three-chambered hearts with incomplete septa were once viewed as being less adapted to circulatory function than mammalian hearts. What advantage of such hearts did this viewpoint overlook?

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Amphibians have three-chambered hearts, which have some limitations when compared to the four-chambered hearts of birds and mammals. Describe a disadvantage of a three-chambered heart (in comparison to a four-chambered heart), and one way in which amphibians are able to compensate for it.
In the evolution of circulatory systems, how is a 4-chambered heart advantageous compared to a 3-chambered heart?
In the evolution of circulatory systems, how is a two-circuit circulatory system (such as that found in frogs) advantageous compared to a single-circuit circulatory system (such as that found in fishes)?

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Campbell Biology, Books a la Carte Plus Mastering Biology with eText -- Access Card Package (10th Edition)

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