Animal Biology #14
BODY SIZE and SCALING
SKIN
  • Body size and scaling:
    • Length, surface area, and volume (or mass)
    • Why size affects shape
  • Outer body coverings of invertebrates:
    • Protection vs. flexibility
    • Soft skin vs. rigid shell
    • Growth in spiral shells
    • Growth in animals that molt (Ecdysozoa)
  • Vertebrate skin-- basic structure and function
    • Fish scales
    • Amphibian skin
    • Reptile skin
    • Mammalian skin
      • Glands
      • Hair
      • Mammary glands
      • Nails and horns
      • Skin growth and repair















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