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प्रश्न
In a closed circulatory system, blood is completely enclosed within:
विकल्प
vessels
heart
skeleton
sinuses
MCQ
उत्तर
heart
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क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
In a closed circulatory system, blood is completely enclosed within:
vessels
heart
skeleton
sinuses
heart