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Topic : Circulatory System

Learn about arteries, veins, and capillaries and their roles in the circulatory system. Discover how they transport blood and why their structures are essential for efficient circulation.

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Topic : Circulatory System

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  1. Topic: Circulatory System Aim: Describe the structure and function of the 3 types of blood vessels. Do Now: Take out your reading notes. Complete Digestive System Check Sheet HW: Finish the Heart ISA

  2. A Platelets B Red blood cells C White blood cells C

  3. Did you know… • The body of an adult contains over 60,000 miles of blood vessels! • An adult's heart pumps nearly 4000 gallons of blood each day!

  4. http://www.youtube.com/watch?v=A-HfDPJ3R00

  5. Capillaries Arteries Veins

  6. ARTERIES • Carry blood AWAYfrom heart • Have THICKERwalls

  7. Blood flows FASTER • HIGHpressure

  8. PULSE can be felt

  9. Branching arteries in the eye

  10. Most carry blood WITH oxygen

  11. Pulmonary arteries: • Carry DEOXYGENATED blood to the LUNGS

  12. Coronary arteries: • Carry OXYGENATED blood to the myocardium (heart muscle)

  13. Aorta: • Largest artery Carriesoxyblood to the rest of the body

  14. Capillaries Arteries Veins

  15. VEINS • Carry blood TOthe heart

  16. VEINS • Have THINNERwalls • LESSpressure • No PULSEcan be felt

  17. HaveVALVES to stop blood from flowing backwards

  18. Most carry blood WITHOUT oxygen

  19. Pulmonary veins: • Carry OXYGENATED from the LUNGS back to the heart

  20. Superior Vena Cava: • Veins that transports DEOXYGENTATED blood from the upper part of the body back to the heart

  21. Inferior Vena Cava: • Veins that transports DEOXYGENTATED blood from the lower part of the body back to the heart

  22. Coronary veins: • Carry DEOXYGENATED blood from the myocardium (heart muscle) to the vena cava

  23. Artery Vein

  24. Capillaries Arteries Veins

  25. CAPILLARIES • TINYblood vessels • CONNECTarteries to veins

  26. Walls are very THIN • Walls are one ONE CELL thick

  27. OXYGENandNUTRIENTSneed to be able to get OUT OF the blood

  28. CARBON DIOXIDE andother WASTE PRODUCTS move from the BODY CELLS back into the BLOOD • https://www.youtube.com/watch?v=Q530H1WxtOw

  29. ARTERIES CAPILLARIES VEINS

  30. Blood vessels in the right arm and shoulder

  31. Arteries of the lower leg & blood supply to the face & skull

  32. What would happen if the coronary artery that transports oxygenated blood to the heart gets blocked?

  33. What would happen if the artery that transports oxygenated blood to the brain gets blocked?

  34. Let’s summarize… • Identify the three types of blood vessels. • Why are arteries very muscular? • Identify where each type of blood vessel carries blood. • Why are capillaries so thin? • Why do veins have valves? • In which blood vessel is your pulse felt? Explain why. https://www.youtube.com/watch?v=oiqfNHC0lG0

  35. VEINS Review: Identify the type of blood vessel. • Low blood pressure • Where diffusion or exchange of substances occurs. • Contains valves • Carry blood away from the heart • Connects arteries and veins • Carry blood away from the heart • Red blood cells move in single file • Elastic and flexible. • Used to feel pulse. https://www.youtube.com/watch?v=VVJJHw_Ocp4 CAPILLARIES VEINS ARTIERIES CAPILLARIES ARTERIES CAPILLARIES ARTERIES ARTERIES

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