Class Amphibia
• Basic Characteristics:
1.
Describe the skin.
2.
In reference to the skin, what features are they missing that fish had?
3.
What is needed for reproduction?
4.
Describe the heart structure in the larva stage.
5.
Describe the heart structure in the adult stage.
6.
List all the structures they use for respiration.
• Introduction
• General Info
Red spotted newt
Notophthalmus viridescens viridescens

Examples of Amphibians
• Examples
• Types

Coqui
Bullfrog
Newt salamander
Caecilian Poison Dart Frog

Beware
• Pictures in the following slide contain pictures of frogs in dissection. They are frogs used for scientific classes and very informative.

Virtual Frog Dissection
Use the frog dissection website to answer questions on your packet about the function of frog structures.

Frog Anatomy
• External Anatomy:
• Tympanum
• Nictitating membrane
• Nares

Anatomy of the mouth
VOMERINE TEETH
INTERNAL NARES
EUSTACHIAN TUBE
GLOTTIS
TONGUE: ATTACHMENT
IN FRONT

CLOACA: wastes and gametes exit here

Amphibian Reproduction
• What type of fertilization occurs in amphibians?
• Describe amphibian eggs and why they must be in water.
What are the advantages and disadvantages of this system of fertilization?
Fertilization

Amphibian Metamorphosis
Define metamorphosis.
Use this link to complete the animation and take the quiz.
Metamorphosis Animation
Metamorphosis Pictures

Amphibians of the Southeast
Pick one of the amphibians from the list of some species from our area. Make sure you pick an amphibian because it is a mix of reptiles and amphibians. Answer the questions.
Amphibian Field Guide