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Question
In ____________ of a mammalian heart O2 rich blood enter first.
Options
left ventricle
left atrium
right ventricle
right atrium
MCQ
Fill in the Blanks
Solution
In left atrium of a mammalian heart O2 rich blood enter first.
Explanation:
Through pulmonary veins, the left atrium receives oxygenated blood from the lungs.
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