Question
Which of the following causes an increase in sodium reabsorption in the distal convoluted tubule?
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Increase in aldosterone levels
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Increase in antidiuretic hormone levels
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Decrease in aldosterone levels
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Decrease in antidiuretic hormone levels
Solution
A.
Increase in aldosterone levels
The increase in aldosterone levels cause and increase in sodium reabsorption is DCT. It is secreted by outer, layer of adrenal gland when aldosterone is present in the blood, all the Na+ in the filtrate is reabsorbed. Retaining Na+ raises the osmotic pressure of the blood and reduces the water loss from the body.
