AQA OCR Edexcel AS Biology Answers The Heart Ci
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Laatste content AQA OCR Edexcel AS Biology Answers The Heart Ci
A Level Biology 
The Heart and Circulatory Answers 
Total Marks:/34 
2022 
AQA, OCR, Edexcel 
A Level 
Answer Marks 
1. 
a) 
i) Movement of fluid in one 
direction ii) 
iii) – The heart causes high pressure in the 
arteries 
- The elastic tissue helps to regulate pressure 
-Smooth muscle helps to redistribute blood/ 
vasoconstriction, vasodilatation. 
iv) Forces blood to flow in one direction/ 
prevents back flow of blood. 
b) 
i) – Heart and lungs 
- Heart and rest of the body 
1 mark 
8 ma...
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A Level Biology 
The Heart and Circulatory Answers 
Total Marks:/34 
2022 
AQA, OCR, Edexcel 
A Level 
Answer Marks 
1. 
a) 
i) Movement of fluid in one 
direction ii) 
iii) – The heart causes high pressure in the 
arteries 
- The elastic tissue helps to regulate pressure 
-Smooth muscle helps to redistribute blood/ 
vasoconstriction, vasodilatation. 
iv) Forces blood to flow in one direction/ 
prevents back flow of blood. 
b) 
i) – Heart and lungs 
- Heart and rest of the body 
1 mark 
8 ma...