The only possible exceptions I can think of are fish(I imagine gills and mouth are not connected but don’t really know). I am excluding bacteria and viruses and I believe they don’t really breath(correct me if I’m wrong).

  • bluGill@fedia.io
    link
    fedilink
    arrow-up
    6
    ·
    23 hours ago

    IN fish water goes in through the mouth and out through the gills, so the connection is required. Some might be able to take water in and out through the gills, but the normal ways is in the mouth out the gills.

    • vrekOP
      link
      fedilink
      English
      arrow-up
      1
      ·
      10 hours ago

      Wait, so fish inhale water… Some process takes place separating the water and oxygen atoms and then they exhale the carbon dioxide and hydrogen out their gills? Or am I still completely wrong?

      • antlion@lemmy.dbzer0.com
        link
        fedilink
        arrow-up
        3
        ·
        9 hours ago

        Not really inhale-exhale, since they don’t have lungs. Kinda like when you sweat and you can feel the breeze cooling you under your arms. But instead of under your arms it would be on your neck, and instead of cooling you’d be respirating. But yes as the water moves past the gills, the blood is receiving oxygen and expelling CO2.