हॉट इस कंपलीटली फोर चैंबर्ड इन बर्ड्स एंड एनिमल्स
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- Heart is completely four chambered in birds and animals.
- It consists of two atria and one ventricle. Birds and mammals, however, have a fully septated ventricle -- a bona fide four-chambered heart. This configuration ensures the separation of low-pressure circulation to the lungs, and high-pressure pumping into the rest of the body.
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