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25 intro to the animal kingdom


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25 intro to the animal kingdom

  1. 1. 26-1 INTRO TO THE ANIMAL KINGDOM <ul><li>Heterotrophs </li></ul><ul><li>Multicellular </li></ul><ul><li>Eukaryotic </li></ul><ul><li>No cell walls </li></ul><ul><li>Have at least a complexity of tissue level… some more than this (organs, organ systems) </li></ul>
  2. 2. Animal groupings: <ul><li>INVERTEBRATES: </li></ul><ul><li>(VERTEBRATES) CHORDATES: </li></ul>
  3. 3. Essential Functions: what animals do to survive <ul><li>Maintaining Homeostasis </li></ul><ul><li>Feeding </li></ul><ul><li>Respiration </li></ul>
  4. 4. <ul><li>Excretion (Elimination) </li></ul><ul><li>Response </li></ul><ul><li>Movement </li></ul>
  5. 5. <ul><li>Circulation </li></ul><ul><li>Reproduction </li></ul>
  7. 7. Features of Body Plans <ul><li>1. Cell Specialization (Levels of Organization) </li></ul><ul><ul><li>As animals have evolved, so have their cells! Cells have become more job-specific in that they perform very special functions. This cell specialization has also led to the evolution of tissues and organs. </li></ul></ul>
  8. 8. <ul><li>2. Body Symmetry </li></ul><ul><ul><li>Radial Symmetry </li></ul></ul><ul><ul><li>Bilateral Symmetry </li></ul></ul><ul><ul><li>Asymmetry </li></ul></ul>
  9. 9. <ul><li>3. Differentiation of Germ Layers </li></ul><ul><ul><li>Endoderm </li></ul></ul><ul><ul><li>Mesoderm </li></ul></ul><ul><ul><li>Ectoderm </li></ul></ul><ul><li>human embryological development </li></ul>
  10. 10. <ul><li>4. Formation of a Body Cavity </li></ul><ul><ul><li>1. Coelom- body cavity that forms within the mesoderm </li></ul></ul><ul><ul><li>2. Pseudocoelom- only partially lined w/mesoderm </li></ul></ul><ul><ul><li>3. Acoelom </li></ul></ul>
  11. 11. <ul><li>5. Early Development </li></ul><ul><ul><li>Blastula </li></ul></ul><ul><ul><li>Protostome vs. Deuterostome </li></ul></ul><ul><ul><li>“ Embryology” </li></ul></ul><ul><ul><li>“ zygote” </li></ul></ul><ul><ul><li>“ blastula” </li></ul></ul>
  12. 12. <ul><li>6. Segmentation </li></ul>
  13. 13. <ul><li>7. Cephalization </li></ul>
  14. 14. <ul><li>8. Limb Formation: Legs, Flippers, and Wings </li></ul>
  15. 15. 26.1 Evolution of Animals