Renal system physiology

Question Answer
In urine formation, solutes and water move from the lumen of the nephron into the interstitial spaces.
The passive movement of stolutes and water from the lumen of the renal tubule into the interstitial spaces relies in part on the total solute gradient surrounding the nephron.
___ increases the water permeability of the distal convoluted tubule and the collecting duct, allowing water to flow to areas of higher solute concentration, from the lumen of the nephron into the surrounding interstitial area ADH Antidiuretic hormone
Because carrier proteins are needed to move glucose from the lumen of the nephron into the interstitial spaces, there is a limit to the amount of glucose that can be reabsorbed
When all glucose carriers are bound with the glucose they are transporting, excess ________ is eliminated in urine. glucose
When a person consumes a large quantity of water, the excess water will be eliminated, producing dilute urine
Under conditions of dehydration, there is a benefit in being able to produce urin as concentrated as possible, retaining precious water
Although the medullary gradient makes it possible to excrete concentrated urine, urine dilution or concontration is under HORMONAL CONTROL
Name the hormone affecting renal function produced by the adrenal gland Aldosterone
Name the hormone affecting renal function manufactured by the hypothalamus and stored in the posterior pituitary gland ADH
Works to reabsorb soidium ions (and water) at the expense of losing potassium ions Aldosterone
It's site of action is the distal tubule Aldosterone
Makes the distal tubule and collecting duct more permeable to water, thereby allowing the body to reabsorb more water from the filtrate ADH

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