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How are hibernation and estivation different? |
Smooth, moist skin (no scales)
Toes lack claws
Gills, lungs, and skin used in respiration
Metamorphosis from larval stage to adult
Larvae heart 2
chambers, adult 3 chambers
Eggs fertilized externally
See where amphibians fit into Earth's history.
Amphibian Orders:
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Two types of respiration:
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Except for lungs and brain, the relative size and location of a frog's internal organs are similar to humans. This makes the frog a good dissection to begin thinking about human organs.
The alimentary canal:
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The frog brain:
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The basic brain functions are as follows:
Ten pairs of cranial nerves extending directly from the brain insure that there is continuous communication between most areas of the brain. |
Day 1 Assignment - Amphibians
Scoring criteria![]()
- In what ways are amphibians adapted for aquatic life?
- In what ways are amphibians adapted for terrestrial life?
- Eustachian tubes are extremely important to frogs. Explain why.
- Pulmonary respiration is many times more efficient than cutaneous respiration. Under what conditions do amphibians rely on cutaneous respiration?
- There are no amphibians that live in the ocean. Give reasons for this.
Research Links: