Question

In an individual who is overhydrated, ADH and urine osmolarity would most likely look like: Select...

In an individual who is overhydrated, ADH and urine osmolarity would most likely look like:

Select one:

a. ADH – high, 600 mOsm urine concentration

b. ADH – low, 600 mOsm urine concentration

c. ADH – high, 100 mOsm urine concentration

d. ADH – low, 100 mOsm urine concentration

Science   Anatomy-And-Physiology   
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Answer #1

ANSWER :

Antidiuretic hormone (ADH) or vassopresin released from the posterior lobe of pituitary gland, when there is a significant reduction of water concentration in the blood plasma (dehydration), and to restore the normal levels of plasma osmolarity, it increase the water absorption in distal convulated tubule (DCT) & collecting duct of kidney nephrons. But during the overhydrated condition, the secretion of ADH significantly decreases and water absorption in renal tubules would also consequently decreased that results in the excretion of excess water in urine (becomes urine hypotonic). Hence option (d) is the correct answer choice.

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