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Amphibians

Amphibians. Vertebrate classes:. 530 mya. Agnatha Chondrichthyes Osteichthyes Amphibians Reptiles Aves Mammals. Amphibians. Lobe-finned fish gave rise to early amphibian . Coelacanth. Amphibian Characteristics. Ectotherms ic – Cold Blooded Three-chambered Heart

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Amphibians

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  1. Amphibians

  2. Vertebrate classes: 530 mya • Agnatha • Chondrichthyes • Osteichthyes • Amphibians • Reptiles • Aves • Mammals

  3. Amphibians • Lobe-finned fish gave rise to early amphibian Coelacanth

  4. Amphibian Characteristics • Ectothermsic– Cold Blooded • Three-chambered Heart • Porous, thin, slimy skin • Must return to water to breed – external fertilization • Live both in water and on land (amphibious)

  5. 3 methods to take in Oxygen • 1. Lungs • 2. Gills • 3. Cutaneous Respiration – through their skin

  6. Order Urodela (Salamanders) – “tailed ones” Mexican axolotl Tiger Salamander Giant Salamander Pacific Giant Salamander Red Spotted Newt

  7. Order Caecilians - “legless ones” Costa Rican - Gymnopismultiplicata Purple Caecilian

  8. Order Anura - “Tailless one’s” The Harlequin Frog Bullfrog Wallace’s Flying Frog Golden Poison Dart Frog Red-Eyed Tree Frog Cane Toad Strawberry Poison Dart Frogs

  9. Leopard Frog - Dissection • Kindgom: Animalia • Phylum: Chordata • Class: Amphibia • Order: Anura • Family: Ranidae • Genus: Rana • Species: pipiens Frog Sound

  10. Frog CHART

  11. Structures Nictitating membrane Tympanic membrane

  12. Structures: • Tongue • Gullet • Glottis • Eustachian tube • Maxillary teeth • Vomerine teeth

  13. Structures • Fat bodies • Liver • Heart • Lungs • Gall bladder

  14. Structures • Stomach • Small intestine • Mesentary • Large intestine/ Cloaca • Spleen • Esophagus

  15. Frog Review

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