please help me with this question

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KARU1977

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hi everyone
i'm giving my part1 in july. i have a question to ask please help me with that

THE PLASMA OSMOLALITY DECREASES AFTER INFUSION OF:
1). aldosterone
2).vasopressin(adh)
3).angiotensin
4).parathyroid hormone
5).isotonic saline solution

ans.is vasopressin
can anyone explain how
thanx.
 
vasopressin is anti diuretic...and so it helps in retaining body fluids....hence the salt conc. in body is decreased in comparison to the fluids and hence osmolality decreases after infusion of vasopressin.



KARU1977 said:
hi everyone
i'm giving my part1 in july. i have a question to ask please help me with that

THE PLASMA OSMOLALITY DECREASES AFTER INFUSION OF:
1). aldosterone
2).vasopressin(adh)
3).angiotensin
4).parathyroid hormone
5).isotonic saline solution

ans.is vasopressin
can anyone explain how
thanx.
 
I think you got your answer but i'll still try to answer this anyway just because i have my DAT in a couple weeks.

Vasopressin also know as ADH is produced by Adrenal Medulla and it makes the proximal convuluted tubule and the collecting duct of the kidney more permeable to water. Hence, more water is retained by the body and this decreases the osmolarity of the blood which results in the increase of blood volume and blood pressure.

I hope i was right. Anybody confirm, please.
 
drengineer said:
I think you got your answer but i'll still try to answer this anyway just because i have my DAT in a couple weeks.

Vasopressin also know as ADH is produced by Adrenal Medulla and it makes the proximal convuluted tubule and the collecting duct of the kidney more permeable to water. Hence, more water is retained by the body and this decreases the osmolarity of the blood which results in the increase of blood volume and blood pressure.

I hope i was right. Anybody confirm, please.

ADH is not made by Adrenal Medulla, ADH is produced in the pituitary, then transported down to the posterior hipotalamus, along with Oxytocin,for storage and being released as a result a positive / negative feedback.
On the other hand Adrenal Medulla produces Epinefrine(Adrenaline) stimulated by the sympatetic nervous system.
😀 😀 😀
 
jojo-Z said:
ADH is not made by Adrenal Medulla, ADH is produced in the pituitary, then transported down to the posterior hipotalamus, along with Oxytocin,for storage and being released as a result a positive / negative feedback.
On the other hand Adrenal Medulla produces Epinefrine(Adrenaline) stimulated by the sympatetic nervous system.
😀 😀 😀


Am I wright ? Anybody ? 🙄
 
jojo-Z said:
Am I wright ? Anybody ? 🙄

Synthesis of vasopresin take place in hypothalmus (supraoptic nucleus and paraventricular nucleus),the posterior lobe of pituitary gland stores and releases it.
 
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