fish

• heart structure


  2 chambers, 1 atrium , 1 ventricles

  
• seperation of blood

  • no seperation of oxygenated and deoxygenated blood
  • one way circulation
  • oxygenated flows from gills to heart to body to gills
• delivery rate

  • slow delivery rate
  • low blood pressure
• Efficiency

  • low activity levels
  • low metabolic activity
  • fish relatively small to accomodate low efficiency