Respiratory System

• tunicates/ cephalochordates

  • Respires during feeding
  • Pharynx with many slits
• Lamprey hagfish

  • gills
• Chondrichthyans

  • Gills
  • Ram ventilation
  • Pump ventilation
• Actinopterygii

  • Gills
  • Swim bladder
• Amphibian 

  • Some breath through skin
  • Gills (especially in larval stage) - internal or external
  • lungs
• Reptiles

  • Lungs
  • Turtle’s lung directly under carapace
• Mammals

  • Lungs with respiration pump
  • More compartmentalization
• Eggs get oxygen from chorioallantois