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Why does the ventricle in a frog's heart have a thicker wall than the atrium?

Answer

Because the ventricle has to pump blood all over the body whereas the atrium only pumps it to the ventricle.
Q&A Related to "Why does the ventricle in a frog's heart have..."
No school entered. City: Bethel State/Province: Ct Country: USA Area of science: Zoology ID: 893458859.Zo
http://www.madsci.org/posts/archives/aug98/8975992...
I am surprised that this information is not in your textbook nor presented in your class. Perhaps you should reread your materials. Anyway, ventricles are used to pump blood away
http://answers.yahoo.com/question/index?qid=100605...
The ventricle has a thicker wall because it is
http://www.chacha.com/question/why-in-a-frogs-hear...
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