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Multiple Choice
Where does antidiuretic hormone (ADH) exert its effects to promote water reabsorption?
A
Distal convoluted tubule
B
Loop of Henle
C
Collecting duct
D
Proximal convoluted tubule
Verified step by step guidance
1
Understand the role of antidiuretic hormone (ADH): ADH is a hormone that helps regulate water balance in the body by promoting water reabsorption in the kidneys.
Identify the structures in the nephron: The nephron is the functional unit of the kidney and consists of several parts, including the proximal convoluted tubule, loop of Henle, distal convoluted tubule, and collecting duct.
Recognize where ADH acts: ADH primarily exerts its effects on the collecting duct of the nephron.
Explain the mechanism: In the presence of ADH, the collecting duct becomes more permeable to water, allowing more water to be reabsorbed back into the bloodstream, thus concentrating the urine.
Conclude the effect: By acting on the collecting duct, ADH helps the body retain water and maintain proper hydration levels.