Biological Science
Biological Science
5th Edition
ISBN: 9780321743671
Author: Scott Freeman
Publisher: PEARSON
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Chapter 45, Problem 12TYU
Summary Introduction

Introduction:

The lungs of the frogs are simple sac-like structures that are lined with the blood vessels. However, the mammalian lungs are divided into many small balloon like structures known as alveoli. Thus, the surface area for gas exchange in frogs is lower than that in the mammalian lungs.

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