In the circulatory system of a frog,which of | vedclass

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(B) In the frog's circulatory system,the $Precaval$ $veins$ (also known as $Superior$ $venae$ $cavae$) collect deoxygenated blood from the anterior pa

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Precaval vein

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(B) In the frog's circulatory system,the $Precaval$ $veins$ (also known as $Superior$ $venae$ $cavae$) collect deoxygenated blood from the anterior parts of the body and head region. Since these veins drain blood directly from the tissues where oxygen has been consumed,they carry the most deoxygenated blood before it enters the sinus venosus. In contrast,the $Pulmocutaneous$ $artery$ carries deoxygenated blood from the heart to the lungs and skin for oxygenation. The $Pulmonary$ $vein$ carries oxygenated blood from the lungs to the left atrium. Therefore,the $Precaval$ $vein$ is the correct answer.

In the circulatory system of a frog,which of the following vessels contains the most deoxygenated blood?

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