4.+Amphibia

=** TOP 10 FACTS **=

=** 1. Amphibian means double life, since part of their lives are in water and then in land. **=

=** 2. a posin arrow frog has enough posin to kill 2,220 people **=

=** 3. Amphibians breathe through their skin. Amphibians like salamanders have slick, slimy and porous skin that helps them to absorb **=

=** oxygen and water from the environment. **=

=** 4. Amphibians usually vary in their sizes and can range from 1 cm to more than 180 centimeters. **=

=** 5. There are 5,000 existing species **=

=** 6. The larval stage is always aquatic **=

=** 7. Some examples are salamanders, toads, frogs, and caecilians **=

=** 8. the largest frog in the world is ca **= =** 9. They are all cold blooded **=

=** 10. Do not posess hair or scales they have protective pigments that help absorb water and oxygen. **=

=** Glossary of Anatomical Terms **=

=**1. **External nares**: the nostrils, the two small openings above the mouth.**=

=**2. **Cloaca**: this is a chamber that stores urine, digestive wastes, and**= =**reproductive fluids**=

=**3. **Maxillary teeth**: small teeth found on the upper jaw**=

=**4. **Vomerine teeth**: found in the top part of the mouth, near the center**=

=**5. **Eustachian tube**: the opening of this is found close to the hinges on each side**= =**of the jaw. It equalizes pressure in the inner ear.**=

=Anatomy of a Frog=

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= = = = = Amphibians of Wisconsin = = = ==