Exam (elaborations) Circulatory System Gizmo SE.

Vocabulary : artery, atrium, blood vessel, capillary, circulatory system, heart, platelet, pulmonary artery, pulmonary vein, red blood cell, urea, ventricle, vein, white blood cell Prior Knowledge Questions (Do these BEFORE using the Gizmo .) 1. Why do you need blood? To regulate the blood flow and carries water and minerals. 0. What organ pushes blood through your body? The 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? It has 4 chambers 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. 0. Turn on Show labels . What are the names of the chambers? Right atrium, left atrium, right ventricle, left ventricle 1. 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”? Right atrium, and left Atrium A. Which chambers contract during “dub”? Right ventricle, left ventricle