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Understanding the Cardiovascular System: Functions and Structure

Learn about the functions and structure of the cardiovascular system, including the heart's role in pumping blood. Discover how blood circulates through the body in two loops and the essential components of this vital system. Students can explore the functions of the cardiovascular system through detailed notes and a persuasive letter activity. Enhance your knowledge with key learning objectives and explanations provided in this educational material.

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Understanding the Cardiovascular System: Functions and Structure

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  1. April 12, 2013 (B Day) Agenda • DSJ #36 • Human Body Corporation (Persuasive Letter) • Cardiovascular System – Part 1 (Notes) • DSR #36

  2. April 15, 2013 (A Day) Agenda • DSJ #36 • Human Body Corporation (Persuasive Letter) • Cardiovascular System – Part 1 (Notes) • DSR #36

  3. DSJ #36 • Science Notebook – 12B • Prompt: Think about a subway, bus, or train. What are the purposes of these vehicles? How do they know where to go? Explain your answer in 5 sentences or more.

  4. Cardiovascular system - part 1

  5. Learning Objectives • Students will: • Explain the functions of the cardiovascular system. • Describe the function and structure of the heart.

  6. The Cardiovascular System • 1. Another name for the cardiovascular system is also known as the circulatory system.

  7. The Cardiovascular System • 2.

  8. The Cardiovascular System • 3. The cardiovascular system carries needed substances, waste products and, disease-fighting blood cells.

  9. The Heart • The heart is a hollow, muscular organ that pumps blood throughout the body.

  10. The Heart • The heart is a hollow, muscular organ that pumps blood throughout the body. • 4. Each time the heart beats, it pushes blood through the blood vessels of the cardiovascular system.

  11. The Heart • The right side of the heart is completely separated from the left side by a wall of tissue called the septum.

  12. The Heart • 5. Each side has an upper chamber, or atrium, and a lower chamber, or ventricle.

  13. The Heart • 5. Each side has an upper chamber, or atrium, and a lower chamber, or ventricle. • There are 2atria (plural for atrium) and 2ventricles.

  14. The Heart • 5. The atria receives blood that comes into the heart.

  15. The Heart • 5. The atria receives blood that comes into the heart. • The ventricles pump blood out of the heart.

  16. The Heart • As blood flows out of the heart and toward the lungs, it passes through a valve like the one here.

  17. The Heart • 6. A flap of tissue that prevents blood from flowing backward is a valve.

  18. The Heart • 7. The group of cells that adjusts the rate of the heart beat is called the pacemaker.

  19. The Heart • When muscle cells in the ventricles contract, they exert a force on the blood.

  20. The Heart • When muscle cells in the ventricles contract, they exert a force on the blood. • 8. The force exerted by the ventricles pushes the blood out of your heart and into the arteries.

  21. Two Loop System • 9. Your body has three kinds of blood vessels – arteries, capillaries, and veins.

  22. Two Loop System • Blood circulates through the body in two loops, with the heart at the center.

  23. Two Loop System • 10. In the first loop, blood travels from the heart to the lungs where oxygen moves into the blood. This blood then goes back to the heart.

  24. Two Loop System • 11 .

  25. Two Loop System • 12. In the second loop, blood is pumped from the heart into the aorta, which is the largestartery in the body.

  26. Two Loop System • 12. In the second loop, blood is pumped from the heart into the aorta, which is the largestartery in the body. • Blood passes throughout the body through the aorta and then returns to the heart.

  27. Glue in SNB **Please remember to use only TWO drops of glue!!** If everyone uses only TWO drops, a lot of glue is saved over time…. • 11B– Human Body Corporation

  28. DSR #36 • Science Notebook – 12B (Under DSJ #36) • Prompt: What 3 structures make up the cardiovascular system? What 3 things are carried throughout the body by this system? What are the 3 kinds blood vessels?

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