Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Question About Ventilation In A Fish

  1. Sep 29, 2004 #1
    The flow of water and ventilation system in fish is 1 way, where as in mamals the flow of gases is in 2 ways. why is this???
  2. jcsd
  3. Sep 29, 2004 #2
    gills are open ended.. lungs have only one point of entry/exit !
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?