Which of the following statements is correct? a. Aldosterone is secreted in response to elevated levels of sodium in the blood.
b. Aldosterone promotes sodium reabsorption in the kidneys. c. Aldosterone helps decrease blood volume. d. Aldosterone increases the concentration of sodium in the urine.
b. Aldosterone promotes sodium reabsorption in the kidneys.
Explanation:
Once it is produced by the adrenal gland it stimulates the mineralocorticoid receptors on the distal tubule and collecting duct of the kidney's nephrons. This causes sodium reabsorption in the kidneys indirectly affecting water retention.
The hydrosphere refers to the water on the earth crust. If there were no hydrosphere, we would not have lakes, oceans, rivers, or even a hose full of water.
