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The following statements about blood vessels is/are correct. (A) Arteries have thin and less muscular walls (B) Walls of veins are non-elastic (C) Arteries have no valves in their inner lining (D) Veins do not collapse when empty (1) A and D (2) Only D (3) B and C (4) A and C |
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Answer» Correct answer is (3) B and C |
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