Function of the DCT

Q. Parathormone influences calcium absorption in the small intestine by regulating the metabolism of:

1. Vitamin B6
2. Vitamin D
3. Vitamin C
4. Enterogastrone

Q. The distal convoluted tubule is permeable to water.

1. True
2. False

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.

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 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)