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Organization of the body

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Chemical Level

  • Atoms combine to form molecules
  • The simplest level

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Macromolecules

  • Molecules combine to create macromolecules
  • Examples:
    • Proteins, lipids, polysaccharides, and nucleic acids

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Organelles

  • Macromolecules combine to create various organelles
    • Examples:
      • Nucleus: information center of the cell
      • Rough Endoplasmic Reticulum (ER): transport and storage
      • Smooth Endoplasmic Reticulum (ER): creates lipids or fats
      • Mitochondria: produces energy through cellular respiration
      • Ribosomes: create proteins
      • Golgi Apparatus: synthesis, packages, and releases concentrate proteins or lipids
      • Centrioles: for cellular division and cellular reproduction
      • Lysosomes: contain enzymes for digestion

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Cells

  • Organelles combine to form different types of cells
  • Examples:
    • Bone Cells (Osteocytes)
    • Cartilage Cells (Chondrocytes)
    • Nerve Cells ( Neurons)
    • Epithelial cells (skin)
    • Muscle cells ( Cardiac, Smooth, Skeletal)
    • Secretory cells (Glands)
    • Adipose cells (fat)
    • Blood Cells ( Leukocytes(white), Erythrocytes (red))

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Tissues

  • Made up of similar types of cells

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Organs

  • Are made up of various amounts and types of tissues

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Organ Systems

  • Made up of organs that function together for a common purpose

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Organism…YOU!!!

  • Highest level of organization
  • When a group of systems work together to continue on living