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Complete double circuit is seen in
Option: 1
Crocodiles
Option: 2
Birds
Option: 3
Mammals
Option: 4
All of the above
Answers (1)
Complete double circuit
- This type of circuit is found in animals with four-chambered heart with two atria and two ventricles e.g. crocodiles, birds and mammals
- In this circulation circuit, oxygenated and deoxygenated blood are completely separated.
- Sinus venosus and truncus arteriosus are absent
- It involves two pacemakers i.e. SA node and AV Node
- The complete double circuit involves two circuits
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