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How do fish excrete?
Fish excrete waste primarily through their gills by releasing ammonia directly into the water. Some fish also excrete waste through their skin, digestive system, and kidneys. The ammonia produced by fish waste is toxic and must be diluted and removed by water circulation in the aquarium or natural water body.
What osmotic regulatory challenges would a fish living in freshwater have versus a fish living in salt water?
A fish living freshwater would be hyperosmotic to its surroundings. This means that it is surrounded by water that is less salty than its blood. Therefore, the main challenge for freshwater fish is to retain enough salt from fresh water for normal bodily functions, resulting in very dilute urine, since they have to get rid of more water relative to salt. A marine fish (salt water fish) has the opposite problem. It is hypoosmotic to its environment, meaning that it lives in water that is saltier than its blood. Therefore, the main challenge for marine fish is to expel enough salt from saltwater to enable it to use the water it takes in for normal bodily functions, resulting in concentrated urine, since they have to get rid of more salt relative to water.
Why do turtles get rid of salt in their body while nesting?
Female sea turtles get rid of salt in their body while nesting in order to keep sand out of their eyes. They have special glands designed to excrete salt, and the salt is excreted through their eyes.
What fish live in salt water?
salt water crocodiles do, and can go from fresh to salt water at will.
Do penguins cry?
Penguins may appear to cry, but they do not shed tears like humans do. Instead, penguins have specialized glands near their eyes that help them excrete excess salt, which can make it look like they are crying.
What excrete excess salt and water?
The salt glands excrete excess salts and water from the body. The urinary tract is also used for this purpose through the kidney.
How do salt water fish get rid of the salt?
Saltwater fish have special cells in their gills that actively pump out excess salt ions through a process called osmoregulation. This allows them to maintain a balance of salts inside their bodies despite living in a high salt environment. Additionally, they have efficient kidneys and excrete concentrated urine to further regulate their internal salt levels.
How do humas lose salt?
Humans lose salt through urine, sweat, and feces. When we sweat during physical activity or in hot temperatures, we excrete salt along with the water. Similarly, our kidneys filter out excess salt from the bloodstream and excrete it in urine.
Why dont saltwater fish dehydrate?
Because they constantly drink saltwater and excrete salt via the gills.
How do flamingos excrete salt through their nostrils?
Flamingos have specialized glands located above their eyes that help them excrete excess salt from their bodies. When they consume saltwater while feeding, these glands filter out the salt and transport it to their nostrils. The excess salt is then expelled through their nostrils, allowing them to maintain a proper balance of electrolytes and hydration. This adaptation enables flamingos to thrive in salty environments where other birds may struggle.
Which animals have the ability to drink salt water?
Some animals, like marine mammals such as seals and sea turtles, have the ability to drink salt water and excrete excess salt through specialized glands.
As a fish moves from salt water to fresh water its cells do what?
As a fish moves from salt water to fresh water, its cells undergo osmosis, where water moves into the cells because the concentration of solutes inside the cells is higher than that in the surrounding fresh water. This can cause the cells to swell and potentially burst if the fish does not regulate the influx of water. To cope with this change, the fish may excrete more dilute urine to remove excess water and adjust its internal salt balance.
How do fish excrete?
Fish excrete waste primarily through their gills by releasing ammonia directly into the water. Some fish also excrete waste through their skin, digestive system, and kidneys. The ammonia produced by fish waste is toxic and must be diluted and removed by water circulation in the aquarium or natural water body.
If a mammal drinks large amounts of salt water what will this do to its urinary output?
Due to its evolutionary descent from fresh water fish mammals get rid of excess salt by flushing it out with excess water. (Fresh water fish always had excess fresh water that was in need of getting rid of, so that is the method they developed and mammals inherited.) If a mammal drinks salt water it tries to get rid of the excess salt by excreting excess water and slowly dehydrates itself to death.
Why do marine fish excrete urine and why in fresh water excrete urea?
Neither marine nor freshwater fish excrete urine or urea; both marine and freshwater fish excrete nitrogenous waste products as pure ammonia.
Do ocean fish avoid building up excess salt by not drinking water?
No. Ocean fish do not "drink" water; they BREATHE water. Their bodies are in equilibrium with the salt in the oceans.
Why does one become thirsty after eating salty foods?
The body wants to excrete the excess salt. This can be done either through the sweat glands, or the kidneys (urine). Either way requires water to dissolve the salt.
