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Specialized Structures in Organisms

Mr. Harper’s science mini lesson with audio. Specialized Structures in Organisms. Important science vocabulary. specialized (SPEH shul eyezd ) made for a special job or set of conditions. specialized Polar bears are specialized for living where it is very cold. specialized

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Specialized Structures in Organisms

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  1. Mr. Harper’s science mini lesson with audio Specialized Structures in Organisms

  2. Important science vocabulary specialized(SPEH shuleyezd) • made for a special job or set of conditions

  3. specialized Polar bears are specialized for living where it is very cold.

  4. specialized Some monkeys have tails that are specialized to help them climb trees.

  5. specialized This truck is specialized for waste removal.

  6. specialized(SPEH shuleyezd) A dentist is specialized for taking care of teeth.

  7. Important science vocabulary structure(STRUK chur) • anything composed of parts arranged together in some way

  8. structure A house is a structure where people can live.

  9. structure A giraffe’s long neck is a structure that helps it reach food.

  10. Roads are man-made structures that help us get where we want to go. structure

  11. structure Blood vessels are tube-like structures that carry blood through the body.

  12. Your hand is a structure. It is made of parts arranged together. blood vessels bones muscles skin nerves nails

  13. Important science vocabulary system(SIS tum) • a group of parts or structures organized to perform a function

  14. All roads and streets are connected to form a transportation system. system

  15. This is a map of our national transportation system. system

  16. system The circulatory system transports blood to every part of the body.

  17. The blood vessels in your body are a transportation system for your blood. system The parts in a system all work together.

  18. system The digestive system processes our food to give us energy to live. The organs in this system all work together to do an important function.

  19. Important science vocabulary function(FUNK shun) • The job or purpose for which something is designed

  20. function The function of a garbage truck is picking up trash.

  21. function The function of a toothbrush is to keep your teeth clean and healthy.

  22. function(FUNK shun) The heart’s function is to pump blood through your blood vessels.

  23. function The function of blood vessels is to transport blood to every part of your body.

  24. Important science vocabulary organism(OR gun iz um) • a living thing; any plant or animal

  25. An organism may be large or small. bacteria whale shark It’s too small to see

  26. Different body parts are made from different types of cells. All organisms are made of tiny living units called cells.

  27. Some organisms are only one cell.

  28. You need a powerful microscope to see a single-celled organism.

  29. Larger, more complex organisms are multi-celled organisms. They are usually big enough to see without a microscope.

  30. But no matter how big or how small it is, every organism and every cell must have 4 things in order to stay alive.

  31. Every living cell must have (food or sunlight) • energy • water • gases • waste removal (air with oxygen or CO2)

  32. It’s easy for single-celled organisms to get these 4 things, because they are all around them in the air or water.

  33. But the cells deep inside a multi-celled organism are surrounded by other cells. How can those the cells get the things they need to live?

  34. Multi-celled plants and animals need specialized structures to transport the materials needed for life to every cell.

  35. Blood vessels are the specialized structures that transport the 4 things that your body’s cells need.

  36. Blood vessels branch smaller and smaller until they can touch every cell in your body.

  37. The very smallest blood vessels are called capillaries.

  38. Capillaries are tiny. Their walls are thin enough to allow water, sugar, oxygen and waste to pass easily between cells and the blood.

  39. The blood in your capillaries brings your cells everything they need. Blood also carries away the poisonous wastes.

  40. Every cell in your body must be very close to a capillary(tiny blood vessel) so it can get the energy, water, gases and waste removal it needs to stay alive.

  41. Every multi-celled organism has a system of tubes to transport materials to every cell.

  42. Plants have a system of tubes

  43. Plant tubes carry water and sap.

  44. Animal tubes are called blood vessels, because they carry blood.

  45. Blood is how your cells get the 4 things they need to live. • Energy • water • gases • waste removal

  46. Your blood brings your cells the 4 things they need to live. • energy • water • oxygen • waste removal

  47. Every cell in your body has a tiny blood vessel right next to it that brings energy, water, and oxygen. They also take away waste .

  48. But …..how do those life giving materials get into the blood?

  49. We eat food to get energy into our bodies.

  50. The digestive system breaks food into chemicals that can travel through blood vessels to every cell in your body.

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