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Undiminished desire for dihydrogen oxide watch

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    Does the consumption of a large cheese tomato pizza with ham, a bowl of ice cream and some fruit per se account for my undiminished desire for dihydrogen oxide, which still occurs after the ingestion of a cup of Hollicks, a cup of tomato juice, and a glass of milk in the past two hours? Two standard portions of aqua have been ingested since. Is this normal?
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    (Original post by darkenergy)
    Is this normal?
    No, and neither are you.
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    How many mMoles of sodium were there in the pizza?

    I'm guessing the ham was salted.
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    (Original post by visesh)
    How many mMoles of sodium were there in the pizza?

    good question!
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    (Original post by visesh)
    How many mMoles of sodium were there in the pizza?

    I'm guessing the ham was salted.
    Combined sodium content is 24.78 mmol; ****. thats loads - 17% higher than normal plasma level, no wonder why my hypothalamus was stimulated.

    However I have one further concern:
    this thirst stimulatory mechanism should be turned off as soon as I ingest water; however this was not the case.

    Ideas?
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    :bird:
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    (Original post by Aired)
    :bird:
    :dito:
    possibilty that someone has done too much revision today?
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    Actually no; I only looked things up as Visesh asked about it, without which I would not have known the things that I said. :p:
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    :bebored:
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    (Original post by Matt_2K)
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    Yeah Im bored of this pointless thread too.
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    (Original post by darkenergy)
    Combined sodium content is 24.78 mmol; ****. thats loads - 17% higher than normal plasma level, no wonder why my hypothalamus was stimulated.

    However I have one further concern:
    this thirst stimulatory mechanism should be turned off as soon as I ingest water; however this was not the case.

    Ideas?
    well i guess water homeostasis takes a bit longer...

    as you probably know DE, there are two main thirst stimuli- dry thirst which is immediately satiated upon water ingestion, and physiological thirst which could take longer to.
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    You mean the off-switch for thirst is different, depending on whether it's dry thirst or hyperosmotic thirst?
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    (Original post by darkenergy)
    You mean the off-switch for thirst is different, depending on whether it's dry thirst or hyperosmotic thirst?
    well that's what I think...:p: Makes sense though, doesn't it?
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    It makes perfect sense; however we rarely see logical constructs in physiology.

    how does the body know whether the water is consumed as a result of hyperosmotic or dry thirst?
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    can't believe I just revised the whole topic about the kidney and dont know what its going on...

    renin, juxtaglomerular cell, macula densa, angiotensin I& II, vaospressin

    and I've got a physiology unit exam coming up on 6/6
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    (Original post by darkenergy)
    It makes perfect sense; however we rarely see logical constructs in physiology.

    how does the body know whether the water is consumed as a result of hyperosmotic or dry thirst?
    well dry thirst is normally cause by a dry mouth and throat, and ingesting water can fix that immediately. hyperosmotic thirst would probably require water to be absorbed fromt eh gut, and taken up by the blood. volume senors (low pressure sensors in the great veins and RA) will have to be sufficiently stimulated. The GFR will have to be changed, and the kidneys will have to detect normal sodium levels before hyperosmotic thirst is satiated.

    I haven't started my HOM lectures yet, and spent too much time listening to Sage's piss-up stories and laughing at his slides to learn much, so I am probably just blabbering...
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    Shame he took the funny images out of the slides... no I mean by drinking water the reflex should theoretically inhibit drinking desire, a function that failed in my case.
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    Be cautious, polydipsia may be indicative of inadequately controlled diabetes mellitus or insipidus.
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    (Original post by Revd. Mike)
    Be cautious, polydipsia may be indicative of inadequately controlled diabetes mellitus or insipidus.
    Indeed; but hopefully not. Luckily this polydipsia was not accompanied by polyuria which could be indicative of diabetes.:rolleyes:
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    If ya'll trying to ridicule each other using scientific terminology, I suggest you slip in occipotal lobe epilepsy causing sever visual defects... :p:
 
 
 
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