Veins quiz Flashcards
Veins quiz
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Which of the following correctly describes veins? A) Veins carry blood away from the heart with high pressure. B) Veins have thicker walls than arteries. C) Veins carry blood towards the heart with lower pressure. D) Veins have more smooth muscle than arteries. C) Veins carry blood towards the heart with lower pressure. Which of the following best describes veins? A) Veins have thicker tunica media than arteries. B) Veins have larger lumens than arteries. C) Veins carry oxygenated blood. D) Veins have higher blood pressure than arteries. B) Veins have larger lumens than arteries. Which of the following is true regarding veins? A) Veins have internal and external elastic lamina. B) Veins have venous valves to prevent backflow. C) Veins carry blood away from the heart. D) Veins have thicker walls than arteries. B) Veins have venous valves to prevent backflow. Which of the following is true of veins? A) Veins have higher blood pressure than arteries. B) Veins have thicker tunica media than arteries. C) Veins carry blood towards the heart. D) Veins have more muscle and elastic tissue than arteries. C) Veins carry blood towards the heart. Which best applies to the structure of veins? A) Veins have thicker walls than arteries. B) Veins have smaller lumens than arteries. C) Veins have less smooth muscle and elastic tissue than arteries. D) Veins carry blood away from the heart. C) Veins have less smooth muscle and elastic tissue than arteries. Which are veins with especially thin walls? A) Arteries B) Venules C) Capillaries D) Arterioles B) Venules Which is true about veins? A) Veins have higher blood pressure than arteries. B) Veins carry oxygenated blood. C) Veins have larger lumens than arteries. D) Veins have thicker tunica media than arteries. C) Veins have larger lumens than arteries. Which of the following is true about veins? A) Veins have thicker walls than arteries. B) Veins carry blood away from the heart. C) Veins have venous valves to prevent backflow. D) Veins have higher blood pressure than arteries. C) Veins have venous valves to prevent backflow. Which definition best describes veins? A) Blood vessels that carry blood away from the heart with high pressure. B) Blood vessels that carry blood towards the heart with lower pressure. C) Blood vessels with thicker walls than arteries. D) Blood vessels with more smooth muscle than arteries. B) Blood vessels that carry blood towards the heart with lower pressure. What is the primary function of venous valves in veins? Venous valves prevent the backflow of blood, ensuring unidirectional flow towards the heart.
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