Frogs

Name: ___________________________________ Date: ________________________

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? It carries oxygen to the rest of our body to keep us alive.

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? _The heart has 4 chambers

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

through the heart? These are valves that keep blooding flowing forward.

3. Turn on Show labels. What are the names of the chambers? __Right Atrium, Left Atrium, Right Ventricles, Left Ventricles

4. Observe the two parts of the heartbeat. The first part of the heartbeat is nicknamed “lub,” and the second is nicknamed “dub.” (This is because a heartbeat sounds like “lub-dub.”)

A. Which chambers contract during “lub”? Right and left atrium

B. Which chambers contract during “dub”? left and right ventricle

5. Challenge: Why do you think the left atrium and left ventricle are shown on the right side of the diagram? It is like this because it is like looking at your reflection in the mirror.

|Activity A: |Get the Gizmo ready: |[pic] |

| |Turn off Show labels. | |

|Blood flow |Turn on Show blood flow. | |

Question: How does blood flow through the...