)Which one of the following statements about aldosterone iscorrect?a) it produces its effect by activating C-AMP .b) it produces its effect by increasing membrane permeability to potassiumc) it causes an increased reabsorption of hydrogen ion.d) it has its main effect on the proximal tubule .e) it is secreted in response to an increase in blood pressure
Question
)Which one of the following statements about aldosterone iscorrect?a) it produces its effect by activating C-AMP .b) it produces its effect by increasing membrane permeability to potassiumc) it causes an increased reabsorption of hydrogen ion.d) it has its main effect on the proximal tubule .e) it is secreted in response to an increase in blood pressure
Solution
The correct statement about aldosterone is: e) it is secreted in response to an increase in blood pressure.
Aldosterone is a hormone that is produced by the adrenal glands to help regulate the balance of water and electrolytes in your body, specifically sodium and potassium. It does this by promoting the reabsorption of sodium and water - not hydrogen ions - in the kidneys, which helps to increase blood volume and therefore blood pressure.
It does not produce its effects by activating C-AMP or increasing membrane permeability to potassium. Instead, it increases the reabsorption of sodium and water in the kidneys, which indirectly leads to a decrease in potassium levels.
Finally, aldosterone does not have its main effect on the proximal tubule. Instead, it primarily acts on the cells of the distal tubule and collecting duct in the kidneys.
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