17.1 common traits of vertebrates
DESCRIPTION
Class notes for 17.1.TRANSCRIPT
Vertebrae
Bones located in the middle of your backJoined together with cartilage to form the backboneProtects the spinal chord
Notochord: flexible skeletal rod – is replaced by backbone
Vertebrae
ENDOthermsAnimals with CONSTANT internal body temperaturesBody cells produce heat to keep bodies warm
**Humans are ENDOTHERMS
Examples of Endotherms
ECTOtherms
Animals with bodies that receive heat from the OUTSIDEBody temperature depends on environment
Ectotherm Examples
Origin of Vertebrates
500 million years ago
Water-Dwelling Fish Like Animals
Different Kinds of
Fish
Adaptation: Strong, lobe-
like fins
Adaptation: Lungs
7 Classes of Vertebrates1)Class Agnatha {Jawless Fish}
2)Class Chondrichthyes {Cartilaginous Fish}
3)Class Osteichthyes {Bony Fish}
4)Class Amphibia {Amphibians}
5)Class Reptilia {Reptiles}
6)Class Aves {Birds}
7)Class Mammalia {Mammals}