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The similarity is both of them use lung as the site for gaseous exchange. The difference is human heart has two ventricles while frog only has one. So the deoxygenated and oxygenated blood in frog are mixed together as its ventricle is not divided into two by septum, which is present in human.

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12y ago
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12y ago

Frog is in a phylum Chordata same as human which means they are very close and have similar structures in terms of taxonomic classification and embryological development. One of the differences would be they differ in classes.. frog is a class Retilia and human is in class Mammalia. One similarity between circulatory system of frog and human is that they are both closed circulatory systems which means the blood does not diffuse into cells directly like the open circulatory systems does. In terms of heart structure, reptiles have only 3 chamberd heart, 2 atria and 1 ventricle, while mammals like human have 4 chamberd heart, 2 atria and 2 ventricle. Is it only me think they have more differences than similarities? weird...

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8y ago

A human heartbeat remains the same regardless of the surrounding temperature. A frogs heart beat beats faster when the temperature increases.

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8y ago

Both have a heart and they both are a closed circualtroy system

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Q: Similarities between frog and human circulatory system?
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