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4 marksThe Circulatory System of Mammals

CAPE Biology Unit 2 · 2005 · Paper 2 · Question 6(b)(i)

Discuss how the blood vessels of the circulatory system are adapted structurally and functionally to the distribution of blood.

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  1. 6(a)(i)Describe the forces and conditions which cause blood from the right atrium to enter and fill the right ventricle.[6 marks]
  2. 6(a)(ii)The right and left ventricles force blood out of the heart at pressures of approximately 4 kPa and 16 kPa respectively. Explain why this difference is…[4 marks]
  3. 6(b)(ii)Discuss how the blood vessels of the circulatory system are adapted structurally and functionally to the return of blood.[3 marks]
  4. 6(b)(iii)Discuss how the blood vessels of the circulatory system are adapted structurally and functionally to the interchange of substances with the tissues.[3 marks]

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