salmonella
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being weightless in the capsule for several days produces all of the followig except
a.....decrease sec of ADH
b....decrease volume of blood in legs
c.....increase volume of ECF
d...decrease ca balance
e....decrease Na balance
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| Luckyall
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A ADH should increase
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| new_n_lost
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d...decrease ca balance
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| salmonella
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this is also physio text book qs ,see endo section q no 58
correct ans is c
Being weight less allow blood that is normally pooled in large veins to redistribute throughout all of the body veins.As a result ,a significant portion of this blood shifts to large vein of the abdomen and chest. This stretches the baroreceptors in the atria and large veins causing them to send signals to CNS.These signals inhibit the sec of ADH.
With decreased ADH (CHOICE A ),water exc increases and the volume of ECF decreases.(CHOICE C).Ca is lost CHOICE D)because the bones are no longer under the stress of gravity.Na is lost(CHOICE D)bcz the redistribution of blood results in decease tone to renal vasculature ,thus decreasing renin ,angiotensin and aldosterone.The loss of Na contributes to decrease in ECF volumebcz
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| new_n_lost
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but according to Ganong the Plamse Volume decreases cos the Blood is not being dragged by the Gravity so the total Volume increases which then decreases due to diuresis. but eh ECF volume doesnt increase. willhave to look into it Comments on it plz.
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| salmonella
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u are right nnl
qs asks being weightless in the capsule for several days produces all of the followig EXCEPT eEXCEPT
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| new_n_lost
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MAN u r right
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| epica
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Oh, guys, thanks NNL, THANKS... I already started to check it.
Thanks again...
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| salmonella
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| epica
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