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Biology · Oct / Nov 2019 · Paper 11 · Question 13

5090Circulatory system

What is meant by double circulation?

  1. ABlood travels down the left-hand side of the body and up the right.
  2. BBlood travels away from the heart in the arteries and back to the heart in the veins.
  3. CThere are two separate circulatory systems in the body.
  4. DThere is a low pressure circulation to the lungs and a high pressure circulation to body tissues.

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Correct answer: D. There is a low pressure circulation to the lungs and a high pressure circulation to body tissues.

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