Name: ______________________________________ Date: ________________________
Student Exploration: Circulatory System
Activity A:
Blood flow
Get the Gizmo ready:
• Turn off Show labels.
• Turn on Show blood flow.
Question: How does blood flow through the heart?
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.
They change color when oxygenated or deoxygenated.
2. 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? _______________________________
3. Collect data: Use the syringe to collect a blood sample from the right (blue) side of the heart. Look at the
Data from blood sample on the right side of the Gizmo.
A. What is the concentration of oxygen in this sample? ____________________
B. What is the concentration of carbon dioxide in this sample? ____________________
4. Collect data: Collect a sample from the left (red) side of the heart.
A. What is the concentration of oxygen in this sample? ____________________
B. What is the concentration of carbon dioxide in this sample? ____________________
5. Draw conclusions: Between the right ventricle and the left atrium, blood goes through the lungs. Based on
the data you have collected, what happens in the lungs?
_________________________________________________________________________
_________________________________________________________________________
6. Observe: Watch the blood after it leaves the left ventricle. What are three of the many places that blood
goes after leaving the heart?
____________________ _______________________________ _________________________
