Photo AI
Which blood vessels have valves along their length? A - OCR Gateway - GCSE Biology - Question 4 - 2022 - Paper 1
Question 4
Which blood vessels have valves along their length? A. Arteries and capillaries B. Arteries, veins and capillaries C. Capillaries D. Veins Your answer
Worked Solution & Example Answer:Which blood vessels have valves along their length? A - OCR Gateway - GCSE Biology - Question 4 - 2022 - Paper 1
Step 1
Identify the correct answer choice
Answer
The correct answer is D. Veins.
Explanation:
Veins are the blood vessels that contain valves along their length. These valves prevent the backflow of blood, ensuring that it continues to flow toward the heart. In contrast, arteries do not typically have valves because the high pressure of blood flow from the heart keeps it moving in one direction, and capillaries are too small to contain valves.