A tale of 2 fish

[topdent1]

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I am having trouble understanding this:

Freshwater fish respond to their osmotic environment by:

Freshwater means that their is very little salt and that the environment is hypotonic to the fish. In order to make up the difference, a freshwater fish would drink lots of water in order to balance the gradients. I understand hypo and hyper tonic stuff but the example is screwing me up.

 

[excusezmoi]

Freshwater fish is saltier than the environment so it's hyperosmotic to the environment while the environment is hypo-osmotic to the fish.
So water goes into the fish

In response fresh water fish:
Will rarely drink (since water naturally goes in already)
Urinate a lot (to lose the water)
Absorb salts (to maintains it's usual saltiness >then freshwater)

 

[TheGreenWave]

Freshwater fish is saltier than the environment so it's hyperosmotic to the environment while the environment is hypo-osmotic to the fish.
So water goes into the fish

In response fresh water fish:
Will rarely drink (since water naturally goes in already)
Urinate a lot (to lose the water)
Absorb salts (to maintains it's usual saltiness >then freshwater)

👍👍👍

 

[Hugh Mannity]

I thought you retook today topdent1?

 

[Ferdowsi]

I rmr a question from A DAT i took a two years ago. what would happen if you place RBC into a freshwater?.

I put it will burst. i hope i was right..lOL

 

[topdent1]

I thought you retook today topdent1?

I'm guessing you didn't hear what happened. This should explain:

http://forums.studentdoctor.net/showthread.php?t=548459

Thanks for the explanation guys.