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Gizmo Circulatory System ( ALL ANSWERS CORRECT )

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Student Exploration: Circulatory System Vocabulary: artery, atrium, blood vessel, capillary, circulatory system, heart, platelet, pulmonary artery, pulmonary vein, red blood cell, urea, ventricle, v... ein, white blood cell Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 1. Why do you need blood? To transport oxygen throughout the body. 2. What organ pushes blood through your body? Heart Gizmo Warm-up The Circulatory System Gizmo™ shows the heart and blood vessels that make up the circulatory system. Look at the heart. 1. How many chambers does the heart have? 4 2. Do you see tiny “doors” that open and close as blood is pumped through the heart? Yes These are valves. Valves keep blood from flowing backward in the heart and blood vessels. 3. Turn on Show labels. What are the names of the chambers? Left atrium, Right atrium, Left ventricle, and Right ventricle 4. Click PLAY and listen for the two parts of the heartbeat, nicknamed “lub” and “dub.” (Note: The recording is not in sync with the heart animation.) Observe the heart. A. Which chambers contract during “lub”? Left atrium & Right atrium B. Which chambers contract during “dub”? Left ventricle & Right ventricle 5. Challenge: Why do you think the left atrium and left ventricle are shown on the right side of the diagram? The x-ray was taking on someone's back to have a better picture [Show More]

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