2. Organ Systems Do You Remember? 4 th Grade Science

3. What is the main organ that makes up the circulatory system? A) LiverC) Kidney B) HeartD) Brain

4. The job of the heart is to move __________ through the body. A) cellsC) 7-Up B) waterD) blood

5. True or False All vertebrates have a closed circulatory system. A) True B) False

6. A fish heart has ___________parts, or chambers. A) 2C) 10 B) 5D) 1

7. An amphibian heart has _______ parts, or chambers. A) 6C) 10 B) 3D) 0

8. Mammals have hearts with ___________ parts, or chambers. A) 1C) 4 B) 0D) 20

9. The fish heart has only _________ atrium. A) 3C) 8 B) 1D) 4

10. The amphibian heart has ___________ atriums. A) 2C) 60 B) 3 D) 4

11. In the activity today you will create either a fish heart or a frog heart. What parts of the heart will the cups represent? A) the bloodC) the cells B) the different chambers

12. In the activity today you will create either a fish heart or a frog heart. What structures do the straws represent? A) blood vessels leading into and out of the heart B) your small intestines

13. In the activity today you will be creating either a fish or frog heart. What structures do the paper circles represent in your model? A) cells in your body B) the walls between the atrium and ventricle in the heart

14. After you finish creating the model for the fish or frog heart what do you think you will be asked to do next? A) Run wildly around the room yelling “I’m done! I’m done!!” B)Quietly work with your partner and answer questions on a worksheet about your model.

15. Now Let’s See How You Did!