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What is the role of the valves in the veins? What is the role of the valves in the veins? The valves in the veins prevent the backflow of blood, ensuring it moves in a one-way direction toward the heart - AQA - GCSE Physical Education - Question 12 - 2022 - Paper 1

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Question 12

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What is the role of the valves in the veins? What is the role of the valves in the veins? The valves in the veins prevent the backflow of blood, ensuring it moves ... show full transcript

Worked Solution & Example Answer:What is the role of the valves in the veins? What is the role of the valves in the veins? The valves in the veins prevent the backflow of blood, ensuring it moves in a one-way direction toward the heart - AQA - GCSE Physical Education - Question 12 - 2022 - Paper 1

Step 1

Identify two features of the structure of arteries.

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Answer

Feature 1: Small lumen Feature 2: Thick muscular walls

Step 2

Explain how each feature helps the arteries perform their function.

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Answer

The small lumen allows blood to travel quickly away from the heart, maintaining high pressure necessary for effective circulation. The thick muscular walls enable arteries to withstand and regulate high pressure, ensuring that blood flow is controlled and consistent.

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