A nursing instructor is preparing a lecture about the difference between veins and arteries. Which of the following statements could the instructor correctly include?
1. Veins carry oxygenated blood, whereas arteries carry deoxygenated blood.
2. Blood pressure is higher in veins than in arteries; veins thus have thicker walls than arteries.
3. Veins and arteries have many junctions (or anastomoses) where veins and arteries join each other.
4. Veins have valves, whereas arteries do not.
ANS: 4
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