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Continue to ChatBlood vessels which return the blood to the heart called : https://preparationpoint.info/solved-past-papers-mcqs/ppsc-past-papers/ppsc-past-papers-2018/model-paper-64-excise-taxation-inspector-bs-16-18j-19j-20j-2018/blood-vessels-which-return-the-blood-to-the-heart-called/