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Questions and Answers
Which of the following is the main reason why veins need valves?
What is the function of veins in the circulatory system?
Why are veins more distensible than arteries?
What percentage of blood volume do veins contain at any given time?
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Study Notes
Comparison: Veins as Blood Reservoirs
- Veins are thin-walled and have large lumens.
- Veins are low-pressure vessels.
- Veins have valves to prevent backflow of blood due to low blood pressure and gravity.
- Veins function as blood reservoirs.
- Veins contain approximately 64% of the blood volume at any given time.
- Veins have the capacity to distend or expand readily.
- Veins can store a high volume of blood even at a low pressure.
- Veins have larger lumens and thinner walls compared to arteries.
- Veins are more distensible than arteries.
- Veins are referred to as capacitance vessels.
- Veins have the ability to hold a high volume of blood due to their distensibility.
- Veins play a crucial role in maintaining blood volume and pressure.
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Description
Test your knowledge on veins and their unique characteristics in this informative quiz. Learn about their thin-walled structure, large lumen, and the important role they play as blood reservoirs. Discover how valves prevent backflow and why veins have the capacity to store a high volume of blood.
