1. Living Systems
Investigation 3, Part 2 –
Circulatory Systems

2. Plant Circulation How are nutrients transported to cells in a plant?
Living Systems, 3.2: Circulatory Systems
Step 1

3. Focus Question How do humans transport nutrients to all their cells?
Living Systems, 3.2: Circulatory Systems
Step 2

4. Human Circulatory System
Living Systems, 3.2: Circulatory Systems
Step 3

5. Circulatory and Respiratory System
Living Systems, 3.2: Circulatory Systems
Steps 4–5

6. Right side of the heart Living Systems, 3.2: Circulatory Systems
Step 6

7. Circulatory System Model
Construct a model of the right side of the heart.
Label the "right ventricle" bottles and "lung blood" and "body blood" containers using the self-stick notes.
Fill all the containers halfway with water.
Valves insert securely in the ends of the rigid pipes. Flexible hoses fit over the ends of the pipes.
Materials:
The right ventricle of the heart
Blood in body
Blood in lungs
2 heart valves
Clips used to help secure hoses
Veins and arteries
Living Systems, 3.2: Circulatory System
Steps 7–8

8. The Human Circulatory System
Living Systems, 3.2: Circulatory Systems
Steps 11–14

9. Circulatory System Model
Construct the circulatory system model.
Label the "right ventricle” and “left ventricle” bottles and "lung blood" and "body blood" containers using the self-stick notes.
Fill all the containers halfway with water.
Valves insert securely in the ends of the rigid pipes. Flexible hoses fit over the ends of the pipes.
Materials:
The right and left ventricle of the heart
Blood in body
Blood in lungs
4 heart valves
Clips used to help secure hoses
Veins and arteries
Living Systems, 3.2: Circulatory System
Steps 15–17

10. Sense-Making Discussion
Living Systems, 3.2: Circulatory Systems
Step 18

11. Vocabulary Review
circulatory system the system of blood vessels and organs that transports blood to all the cells in the body artery a blood vessel that carries blood from the heart to the body vein a blood vessel that carries blood from the body to the heart capillary the smallest blood vessel. Gases, nutrients, and wastes are exchanged between capillaries and cells. heart a muscular organ that pumps blood
Living Systems, 3.2: Circulatory Systems
Step 19

12. Vocabulary Review
right atrium the upper chamber on the right side of the heart right ventricle the lower chamber on the right side of the heart lung the organ in animals where gases, such as oxygen and carbon dioxide, pass between the atmosphere and the blood left atrium the upper chamber on the left side of the heart left ventricle the lower chamber on the left side of the heart heart valve a structure in the heart that acts like a one-way gate, ensuring that blood flows in one direction through the circulatory system
Living Systems, 3.2: Circulatory Systems
Step 19

13. Focus Question How do humans transport nutrients to all their cells?
Living Systems, 3.2: Circulatory Systems
Step 20

14. Response Sheet
Living Systems, 3.2: Circulatory Systems
Step 21

15. How do humans transport nutrients to all their cells?
Wrap-Up/Warm-Up
How do humans transport nutrients to all their cells?
Pair up with a partner to compare your answer to the focus question.
Draw a line of learning under your answer and add any additional information below the line.
Living Systems, 3.2: Circulatory Systems
Step 22

16. Mammalian Circulatory System
Living Systems, 3.2: Circulatory Systems
Step 23

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Notebook image: © photastic/Shutterstock TM
Living Systems, 3.2: Circulatory Systems