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Pretty much the same as in human, keeping the blood free from waste and make sure no needed nutrients goes out with the urine.

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How does the function of kidneys in saltwater fish differ from their function in freshwater fish?

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Is secretion a function of kidneys?

Yes, but in mammals it is a minor function. (In salt water fish it is their major function.)


How does the function of kidneys in saltwater fishes differ from their function in freshwater fishes?

Blood wastes are filtered by the kidneys. Saltwater fish lose water because of osmosis. Their kidneys return water to the body. The reverse happens in freshwater fish: they to gain water osmotically. Their kidneys produce dilute urine for excretion.


Is secretion a function of muscle?

Yes, but in mammals it is a minor function. (In salt water fish it is their major function.)


What is the function of the kidneys in a chicken?

The kidneys of a chicken function the same way the kidneys do in a human body. Their function is to filter blood to remove waste and regulate electrolytes.


What happens to the fishes kidneys if they are in salt water?

If the fish are fresh water fish the kidneys would not work. The fish would die.


What is the function of the kidney in chickens?

The kidneys of a chicken function the same way the kidneys do in a human body. Their function is to filter blood to remove waste and regulate electrolytes.


What is the function of Arcuate arteries of the kidneys?

They drain unfilterd blood from the body into the kidneys


What is the function of the cortex of the kidneys?

urine


How does sweating help the kidneys function?

Sweating helps the kidneys function by removing excess salt and water from the body, which reduces the workload on the kidneys and helps maintain a healthy balance of fluids and electrolytes.


Do your kidneys function better when laying down?

This will depend on the person. For some people, kidneys do indeed function better laying down at night.


Does fish has kidneys?

The same thing any animals' kidneys do. They filter out impurities from the blood so they can be excreted. More importantly in fish, the kidneys are a major organ to help maintain osmotic balance with their environment. In freshwater fish, they retain salts in the blood of the fish (since the fish is hyperosmotic to its environment, the salts want to diffuse out, and lots of water wants to move into the fish) while they are constantly urinating because of the net movement of water into the fish. In SW fish, the kidneys help move OUT extra salts taken in when the fish drinks seawater, because the salts want in and the water wants out (the fish is hypo osmotic to the seawater).