3.3. Questions: 1. Explain how the pulmonary circuit shows vertebrate adaptations to life on land. 2. Which vertebrate classes are fully adapted to a terrestrial lifestyle? 3. What anatomical feature is present only in mammals (the pig) but not in the other vertebrates? 4. How do the frog and pigeon (both air breathers) overcome the lack of this structure? 5. What anatomical feature(s) is/are present in pig and pigeon, but missing in the frog and perch?
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The pulmonary circuit in vertebrates refers to the pathway of blood flow between the heart and the lungs. In terrestrial vertebrates, such as mammals, birds, and reptiles, the pulmonary circuit has undergone adaptations to support life on land. One adaptation is Show more…
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