While the brain coordinates and controls our body and mind, the heart plays the role being the motor that keeps the working of body steady. When the heart stops, living beings die. Therefore, the heart is one of the most vital organs of our body. A mammal’s heart is designed in a very special way.
All mammals have hearts with four chambers. Two of the chambers are on the right side and two are on the left. The two chambers on the right side receive blood, which carries impurities from the body. They pump it to the lungs. In the lungs, the blood passes out waste gases and receives fresh oxygen. The blood is, then, pumped to the two chambers on the left side from where it is carried to various parts of the body. This is how the heart of a mammal generally functions.
Since a mammal’s heart has two sides and two chambers on each side, scientists say that mammals have ‘two-in-one’ hearts.
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