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Student Exploration- Circulatory System (answers)

Student Exploration- Circulatory System (answers)

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Author: Jack Bauer
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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, vein, white blood cell

Prior Knowledge Questions (Do these BEFORE using the Gizmo.)

1. Why do you need blood?

2.What organ pushes blood through your body?

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?

2. Do you see tiny “doors” that open and close as blood is pumped through the heart?

3.Turn on Show labels. What are the names of the chambers?

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”?

B. Which chambers contract during “dub”?

5.Challenge: Why do you think the left atrium and left ventricle are shown on the right side of the diagram?

1.Observe: Blood in each chamber of the heart is represented by little balls. Observe the balls as they move through the heart and lungs.

2.Label: Turn on Show labels. Label the four chambers of the heart on the diagram. Then draw arrows to show the direction that blood flows through the heart.

Starting at the right atrium, in what order does blood flow through the four chambers?

3. Analyze: Observe the path of blood that leaves each ventricle.

A. Where does blood from the right ventricle go?

B. Where does blood from the left ventricle go?

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