The atrium and the ventricle work as a pair. The heart has two of these pairs making the four chambers. The right pair receives blood returning from the body and pump it to the lungs. The left pair receive blood from the lungs and pump it to the body. The atriums are on top and the ventricles are on the bottom of the heart. The atrium receives the blood and pumps it to the ventricle which, in turn, pumps it to the the lungs or body. The atrium creates a supercharge or extra push, increasing the efficiency of the ventricle by about 20%.
four chambers
Dolphins have a four-chambered heart.
no
Birds have four chamber heart!
Mammals and birds have four-chambered hearts.
Well, both birds and mammals have four heart chambers. So, there is your answer!
The organ is the heart.
A spider monkey has four chamber like the human heart
The bald eagle, a bird, has a four-chambered heart, as do all other birds and mammals.
4 2 ventricles and 2 atriums.
Crocodiles are reptiles not amphibians.
there are four chambers in the heart. two are atriums and two are ventricles