Which vertebrates first developed the ability to breathe atmospheric air?
| May 29, 2020 | Education
In terrestrial vertebrates, the respiratory organs are the lungs. They are thin-walled hollow bags braided by a dense network of blood vessels and capillaries. For the first time the ability to breathe atmospheric air appeared in amphibians.
The appearance of a lung, two circles of blood circulation and a three-chambered heart is aromorphosis of amphibians.
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