Amphibians

• Amphibians

  • tetrapods
  • cold blooded
• amphibian classification

  • frogs
  • salamanders
  • caecilians
• frogs


  live on or near water, most ___ return to water to mate and lay eggs
• caecilians

  • legless burrowing creatures
  • jaws
  • closed circulatory system
• salamanders

  hatch as larva in water and undergo metamorphosis to become semi aquatic
• amphibian skin

  • highly permeable
  • moist and thin
  • thin enough to perform respiration
• buccal pumping: frogs pump air into lungs using their lower mouth
• amphibians have three chambered heart

  • 2 artia
  • 1 ventricle
• amphibians have cloaca
• central nervous system (CNS) - brain and spinal cord
• peripheral nervous system: nerves that connect the brain and spinal cord to the rest of the body