Human Body Quiz 1:

Part 3: Answer the multiple choice questions. 13. The heart pumps blood. Arteries, veins, and capillaries distribute blood to the body. Together, the heart, blood, arteries, veins, and capillaries make up a(n) a. organ c. organ system b. tissue system d. individual organism. 14. Which of the following is an example of mechanical digestion? a. ................
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