A 9 chambered hearth in mammals is a feature of evolution that support the of energy dynamics.
Answers
the most primitive type of heart is found in the fishes and the most developed type of heart is found in the birds and the mammals
Explanation:
the heart is 2 chambered. That is the heart consists of the Atrium and ventricle.
However in case of the amphibians there is only one ventricle but to 8 cm which is present in the heart. In his of the reptiles there is four chambered heart but the four Chambers are incompletely developed and there is mixing of blood.
However in case of the birds and the mammals they have completely develop 4 chambered heart in which there is no mixing of oxygenated and deoxygenated blood.
To know more about heart in chordates,
Regarding position of heart :- 1. In Chordates : dorsal 2. In Non ...
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