1. Amphibians Kingdom: Animalia Phylum: Chordata Order: Anura Family:
Ranidae
Genus:
Rana
Species:
pipiens

2. Vertebrate classes: Agnatha Chondrichthyes Osteichthyes Amphibians
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 - Gymnopis multiplicata
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 Organ/ Structure System Function Countershading
Nictitating membrane
Tympanic membrane
Tongue
Gullet
Glottis
Eustachian tube
Maxillary teeth
Vomerine teeth
Fat bodies
Liver
Heart
Lungs
Gall bladder
Stomach
Small intestine
Mesentary
Large intestine / Cloaca
Spleen
Esophagus
Kidneys
Testes
Sperm duct
Ovaries
Oviduct
Bladder

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

16. Frog Review