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Does ADH increase plasma osmolarity? For some reason E1001 says that it doesn't, it just says that it increases urine concentration which I agree with.
Reason your way through it....what is the function of ADH? (BTW, you basically just answered your own question)Does ADH increase plasma osmolarity? For some reason E1001 says that it doesn't, it just says that it increases urine concentration which I agree with.
the funny thing was, both of the statements were as answers and I just happened to pick the "wrong" one. But then I was like WTF, it does increase plasma osmo because it retains water.
Hmm, you sound like you are still a little confused...unless you are just stating what you were thinking *before*? Think of the mnemonic...always digging holes (in the collecting duct) so that water is reabsorbed back into the blood. Therefore, blood osmo decreases.
Sorry if you got it already and I just drove it into the ground!
ADH increase water reabsorption into plasma that would otherwise end up in urine. Take away water from urine and it becomes more concentrated. Add water to the blood and the molarity goes down/becomes less concentrated. Aldosterone, while it increases Na+ reuptake, I think water immediately follows, so there is no change in osmolarity.Wait, it decreases blood osmolarity? Ok, now I can see that I'm confused. ADH makes the urine more concentrated so then that would put it at a higher osmolarity then? Higher osmolarity means more solute per/L correct? So because the blood would have more water, it would be be at a lower osmolarity? Am I making sense here? What about Aldosterone? Does it increae or decrease blood osmolaritY?
ADH increase water reabsorption into plasma that would otherwise end up in urine. Take away water from urine and it becomes more concentrated. Add water to the blood and the molarity goes down/becomes less concentrated. Aldosterone, while it increases Na+ reuptake, I think water immediately follows, so there is no change in osmolarity.
ADH increase water reabsorption into plasma that would otherwise end up in urine. Take away water from urine and it becomes more concentrated. Add water to the blood and the molarity goes down/becomes less concentrated. Aldosterone, while it increases Na+ reuptake, I think water immediately follows, so there is no change in osmolarity.