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Most fish can only breathe water. They do this by pulling water in through their mouths, and forcing the water back out through their gill slits (which are located behind their heads). As water passes through the gill slits, capillaries absorb oxygen from the water and release carbon dioxide into the water.
However, there are some fish (called lungfish) which evolved lungs. These fish can breathe air when necessary, but usually breathe water.
What else can I help you with?
How do the circulatory system and the respiratory system work together in a fish?
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How does the respiratory system works on piranhas?
respiratory system of gold fish
Where is the respiratory surface in a fish located?
Gills
What is a fish respiratory system?
Internal Gills
What is the respiratory organs of Rohu the fish?
gills
What are the organs of a fish's respiratory system?
gills which are their lungs
What is the respiratory organ of sponges?
In mammals and fish it is lungs
What is the respiratory medium of people and fish?
Humans primarily use air as their respiratory medium, extracting oxygen from the air and releasing carbon dioxide. Fish, on the other hand, use water as their respiratory medium, extracting oxygen from the water through their gills.
How human differ from fish with regards to respiratory function?
Humans must first dissolve the gasses in water (in the alveolii of the lungs) before we can extract it, whereas fish only can get the gasses already dissolved. Also - fish have a one-way respiratory system whereas humans have an in and out respiratory system.
What does the respiratory system do for the body?
how does the respiratory system work
What does the body system do respiratory system?
how does the respiratory system work
In unio the respiratory organs is?
vascular system of star fish
