🐟A🐟
What organ helps a fish filter oxygen out of water?
Gills.
What circulatory structure helps the gills get the oxygen out of the water and into respiration?
Capillaries
Why can't fish breathe like mammals?
Water has much less oxygen than air.
How many parts are there to the fish's respiratory system?
4
How many bones are part of the operculum?
4 on each gill.
When the mouth opens, the __________ closes.
Operculum.
Does the oxygen from the gills go into the lungs?
No. Fish don't have traditional lungs.
What direction does blood flow in, in the gills? (I.E, it goes with or opposite the water)
Opposite the water flow.
What respiratory structure helps the fish float?
Swim Bladder
What type of blood flows INTO the gills?
Deoxygenated blood.
What type of blood flows OUT of the gills?
Oxygenated blood.
The gills are ____ (directional term) to the mouth.
Caudal.
What are the bones protecting the gills called? (It's one name)
The Operculum
What exits through the gills?
Deoxygenated water.
Do fish have lungs?
No, they have a swim bladder, which functions somewhat similarly.
What is the scientific name for aquatic creatures like fish? (It was in the phrase about the operculum bones, I.E they are found in ___________)
Osteichthyes?
What type of blood vessels are in the gills?
Capillaries
If the operculum is open, the mouth is ______.
Closed.
Why do sharks need to constantly move? (And a lot of other fish)
To force water over their gills.
Does every fish have a swim bladder?
No.
Can the swim bladder store oxygen for a fish?
Yes, but only in primitive species and in low-oxygen waters.
Do dolphins have gills?
No?
When outside of the water, a fish's gills will _______
Collapse/Dry
What is it called when water flows opposite blood in the gills?
Countercurrent exchange.
What fish (es) were on the slideshow? (We may have accidentally learned about them)
Salmon :)