Class Amphibia

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Class Amphibia

• Basic Characteristics
• Describe the skin.
• In reference to the skin, what features are they
  missing that fish had?
• What is needed for reproduction?
• Describe the heart structure in the larva stage.
• Describe the heart structure in the adult stage.
• List all the structures they use for respiration.

• Introduction
• General Info

Red spotted newt Notophthalmus viridescens
viridescens
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Examples of Amphibians

• Examples
• Types

B
B
C
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Coqui Bullfrog
Newt salamander
Caecilian
Poison Dart Frog
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Beware

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

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

• External Anatomy
• Tympanum
• Nictitating membrane
• Nares

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Anatomy of the mouth
VOMERINE TEETH
INTERNAL NARES
EUSTACHIAN TUBE
GLOTTIS
TONGUE ATTACHMENT IN FRONT
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Internal Anatomy
CLOACA wastes and gametes exit here
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Amphibian Reproduction
What are the advantages and disadvantages of this
system of fertilization?

• What type of fertilization occurs in amphibians?
• Describe amphibian eggs and why they must be in
  water.

Fertilization
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Amphibian Metamorphosis

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

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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