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Levels of Organization

Levels of Organization

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Levels of Organization

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  1. Levels of Organization Living Things

  2. You already know that everything that is alive or was once alive is made of cells(these are cells in the stem of a plant)

  3. Cells are the basic unit of living things Draw this circle on your page IN THE CENTER

  4. Some examples of cells are… • Nerve Cells

  5. Some examples of cells are… • Bone Cells

  6. Some examples of cells are… • Muscle Cells

  7. Some examples of cells are… • Blood Cells

  8. Two or more kinds of cells that do the same job are called a tissue Draw this diagram on your page

  9. Some examples of tissues are… • Brain tissue = nerve cells + connective cells

  10. Some examples of tissues are… • Blood tissue = red blood cells + white blood cells + platelets

  11. Some examples of tissues are… • Adipose Tissue = lipid cells + connective cells

  12. Some examples of tissues are… • Esophagus tissue = mucous cells + muscle cells + connective cells

  13. Two or more kinds of tissues that do the same job are called an organ Add another layer to your bullseye diagram

  14. Some examples of organs are… • Lungs = alveoli tissue + bronchial tissue + connective tissue

  15. Some examples of organs are… • Kidneys = nephron tissue + tubule tissue + connective tissue + muscle tissue

  16. Some examples of organs are… • Bones = Osteoblast tissue + Bone marrow + Calcium + Connective tissue

  17. Some examples of organs are… • Skin = epidermal tissue + dermal tissue + sweat glands + muscle tissue + adipose tissue skin is the largest organ in the body

  18. Two or more organs that work together on the same job are called an organ system

  19. Some examples of organ systems are… • Digestive System Mouth Esophagus Stomach Liver Small Intestine Large Intestine Anus organs

  20. Some examples of organ systems are… • Respiratory System nose trachea bronchioles alveoli diaphragm (muscle)

  21. Some examples of organ systems are… • Integumentary System skin mucous membranes hair toenails / fingernails eyelashes

  22. Some examples of organ systems are… • Circulatory System heart arteries veins capillaries blood

  23. Many organ systems working together meet the needs of an entire organism.

  24. What’s an organism? An organism is any living that which can exist by itself – without help from other organs or tissues or cells.

  25. An organism can be as big as a bear with many systems, or as small as a bacterium, that has only a single cell (and no actual systems.)