Free MCQsLearn App Download - Topic: Body Transport System Subtopic: Arteries, veins and capillaries
What is vein?
Answer: Vein is a blood vessel with thin walls and broad lumen. Veins contain deoxygenated blood with low pressure, due to its low pressure there is a risk of backward flow of blood. To prevent this backward flow, vein have uni-directional valves which prevent blood from flowing back.
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