17.1 Common Traits of Vertebrates
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17.1 Common Traits of Vertebrates

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Class notes for 17.1.

Class notes for 17.1.

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17.1 Common Traits of Vertebrates 17.1 Common Traits of Vertebrates Presentation Transcript

  • Vertebrae
    • Bones located in the middle of your back
    • Joined together with cartilage to form the backbone
    • Protects the spinal chord View slide
    • Notochord: flexible skeletal rod – is replaced by backbone
  • Vertebrae
    View slide
  • ENDOtherms
    • Animals with CONSTANT internal body temperatures
    • Body cells produce heat to keep bodies warm
    **Humans are ENDOTHERMS
  • Examples of Endotherms
  • ECTOtherms
    • Animals with bodies that receive heat from the OUTSIDE
    • Body temperature depends on environment
  • Ectotherm Examples
  • Origin of Vertebrates
    • 500 million years ago
  • 7 Classes of Vertebrates
    Class Agnatha {Jawless Fish}
    Class Chondrichthyes {Cartilaginous Fish}
    Class Osteichthyes {Bony Fish}
    Class Amphibia {Amphibians}
    Class Reptilia {Reptiles}
    Class Aves {Birds}
    Class Mammalia {Mammals}