Explain what features of the structure of the circulatory system of different groups of vertebrates

| May 23, 2021 | education

Explain what features of the structure of the circulatory system of different groups of vertebrates allows them to adapt to their habitat.

All vertebrates are united by a closed type of circulatory system. The differences are determined by the habitat. Fish living in water have only one circle of blood circulation and have a two-chambered heart. Exceptions are double-hunting fish, which have two circuits of blood circulation. The appearance of the second circle is the merit of pulmonary respiration. This property is also associated with the fact that amphibians, reptiles, birds and mammals have two circles of blood circulation. Note that birds are characterized by powerful clavicular and thoracic arteries that transport blood to the muscles of the wings and chest. With the advent of the second circle, the structure of the heart became more complicated: three-chambered and four-chambered.



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