This category is within the scope of WikiProject Physiology, a collaborative effort to improve the coverage of
Physiology on Wikipedia. If you would like to participate, please visit the project page, where you can join
the discussion and see a list of open tasks.PhysiologyWikipedia:WikiProject PhysiologyTemplate:WikiProject PhysiologyPhysiology articles
Invertebrate respiratory system is within the scope of WikiProject Animals, an attempt to better organize information in articles related to
animals and
zoology. For more information, visit the
project page.AnimalsWikipedia:WikiProject AnimalsTemplate:WikiProject Animalsanimal articles
This category is within the scope of WikiProject Physiology, a collaborative effort to improve the coverage of
Physiology on Wikipedia. If you would like to participate, please visit the project page, where you can join
the discussion and see a list of open tasks.PhysiologyWikipedia:WikiProject PhysiologyTemplate:WikiProject PhysiologyPhysiology articles
Invertebrate respiratory system is within the scope of WikiProject Animals, an attempt to better organize information in articles related to
animals and
zoology. For more information, visit the
project page.AnimalsWikipedia:WikiProject AnimalsTemplate:WikiProject Animalsanimal articles