Non-pulmonary Gas Exchange
Surfaces highly permeable to water _ permeable to O2 and CO2
Amphibians
- Skin and buccal region of throat play major roles in gas exchange
- Highly vascularized regions
- Some taxa are lungless (e.g., Plethodontidae).
- Lungs of some aquatic taxa primarily function as buoyancy devices.
- Rapid flowing water provides more efficient environment for gas exchange.