Where is fluid tubule osmolarity always the greatest?
be the greatest in which of these locations? You correctly answered: the proximal convoluted tubule.
Which hormone aldosterone or ADH has the greater effect on urine volume?
ADH has the greater effect on urine volume. ADH is responsible for fluid retention. Aldosterone is primarily increasing sodium uptake and potassium secretion. In order to reabsorb sodium without affecting urine volume, you would need to increase the amount of aldosterone and decrease ADH.
Why is the concentration in the proximal tubule the same as in the blood?
Why is the solute concentration (mOsm) in the proximal tubule the same as in the blood? Because water and many plasma solutes filter into Bowman’s capsule. Glucose is reabsorbed mainly in the proximal tubule by GLUT 1 transport carriers. When all these are filled up, then the remaining glucose is secreted in the urine.
What will happen to urine volume and concentration as solute gradient in interstitial space is increased?
What will happen to the urine volume and concentration as the solute gradient in the interstitial space is increased? Urine volume will decrease and concentration will increase.
What do you think will happen to urine if you didn’t add ADH to the collecting duct?
Your answer: The urine volume would increase if ADH was not added to the collecting duct. This is because the ADH work on the collecting ducts where the increase the permeability for water is increased, so less water is secreted into the urine, so urine becomes more concentrated.
Why does glucose concentration become zero?
Why does the glucose concentration in the urinary bladder become zero in these experiments? The more glucose carriers, the more glucose absorbed. This plus the fact that the glucose amount in the concentrated capsule did not ever change led to the glucose concentration in the bladder becoming 0.
Which hormone increases water reabsorption by the kidneys?
ADH then acts primarily in the kidneys to increase water reabsorption, thus returning the osmolarity to baseline.
Where does ADH have its greatest effect?
ADH has its greatest effect in the C) distal convoluted tubule. Here, this hormone acts on aquaporin molecules to remove more water from the urine,…
What happens to the concentration of glucose in the urine as the number of glucose carriers increases?
Your answer: As the glucose carriers increases the concentration in the urinary bladder decreases. This is due to more glucose being reabsorbed by active transport at the apical membrane and then facilated diffusion by the GLUT 1 receptors in the basolateral membrane of the distal tubule.