Function of the DCT

Q. Which one of the following statements is correct with respect to kidney function regulation?

1. During summer when body loses of lot of water by evaporation, the release of ADH is suppressed
2. Exposure to cold temperature stimulates ADH release
3. When someone drinks lot of water, ADH release is suppressed
4. An increase in glomerular blood flow stimulates formation of Angiotensin II.

Q. Which of the following causes an increase in sodium reabsorption in distal convoluted tubule?

1. Increase in antidiuretic hormone levels
2. Decrease in aldosterone levels
3. Decrease in antidiuretic hormone levels
4. Increase in aldosterone levels

Q. The distal convoluted tubule is permeable to water.

1. True
2. False

Q. Which of the following results from the action of parathyroid hormone (PTH) on the renal tubule?

1. Interaction with receptors on the luminal membrane of the proximal tubular cells
2. Stimulation of calcium ions reabsorption in the distal tubule
3. Stimulation of phosphate reabsorption in the proximal tubule
4. Decreased urinary excretion of cyclic adenosine monophosphate (CAMP)

Q.

We can produce a concentrated/ dilute urine. This is facilitated by a special mechanism. identify the mechanism.
(a) Reabsorption from PCT
(b) Reabsorption from collecting duct
(c) Reabsorption/Secretion in DCT
(d) Counter current mechanism in Henle's loop vasa recta

Q. Which of the following statements is/are true about parathyroid hormone?

1. It acts on bones and stimulates the process of bone resorption
2. All of the above
3. It stimulates reabsorption of calcium ions by the renal tubules
4. It increases calcium ions absorption from the digested food.

Q. Match the following from column 1 and column 2.

Column 1 (Hormone)	Column 2 (Function)
P. Thymosins	1. Increases the heart rate
Q. Parathyroid hormone	2. Promotes the production of antibodies
R. Adrenaline	3. Increases absorption of calcium from digested food
S. Aldosterone	4. Stimulates the reabsorption of Na+ and water

1. P - 2, Q - 4, R - 3, S -1
2. P - 4, Q - 1, R - 2, S - 3
3. P - 1, Q - 3, R - 4, S - 2
4. P - 2, Q - 3, R -1, S - 4

Q. Which of the following results from the action of parathyroid hormone (PTH) on the renal tubule?

1. Stimulation of calcium ions reabsorption in the distal tubule
2. Stimulation of phosphate reabsorption in the proximal tubule
3. Interaction with receptors on the luminal membrane of the proximal tubular cells
4. Decreased urinary excretion of cyclic adenosine monophosphate (CAMP)

Q. Which of the following causes an increase in sodium reabsorption in distal convoluted tubule?

1. Increase in aldosterone levels
2. Increase in antidiuretic hormone levels
3. Decrease in aldosterone levels
4. Decrease in antidiuretic hormone levels

Q. Which one of the following statements is correct with respect to kidney function regulation?

1. During summer when body loses of lot of water by evaporation, the release of ADH is suppressed
2. When someone drinks lot of water, ADH release is suppressed
3. Exposure to cold temperature stimulates ADH release
4. An increase in glomerular blood flow stimulates formation of Angiotensin II.