Given below are two statements.
Statement I: In frogs, sinus-venosus is present.
Statement II: In birds and mammals, oxygenated and deoxygenated blood received by the left and right atria respectively passes on to the corresponding ventricles.
In the light of the above statements, choose the most appropriate answer from the options given below:
Text Solution
Verified by ExpertsA
• In frogs an accessory chamber i.e., sinus venosus is present in the heart. Sinus venosus is a triangular structure which joins the right atrium of the heart. It receives blood through the major veins called vena cava.
• In birds and mammals, oxygenated and deoxygenated blood received by the left and right atria respectively passes on to the corresponding. ventricles.
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