Biological Science (BIO 100) Final Exam Revision Guide CHAPTER 32: CIRCULATION 1. What are the main functions of the circulatory system? 2. What are the 3 components of the circulatory system? 3. What is the cardiac cycle and what happens during the cardiac cycle? 4. Students need to know how to label a picture of a heart (as noted in the handout). 5. Need to know the blood flow direction of oxygenated and deoxygenated blood. 6. What is the primary function of valves and where can they be found? 7. What are the 4 main components of blood? 8. What is the main function of each of the components of blood?