Multiple Choice
Which gland in the endocrine system primarily controls the body's response to a stressful situation?
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16. The Endocrine System
Introduction to the Endocrine System
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What is the effect of antidiuretic hormone (ADH) on the cells of the collecting duct in the kidneys?
A
It decreases the reabsorption of glucose in the collecting duct.
B
It increases the secretion of sodium ions into the collecting duct.
C
It decreases the permeability of the collecting duct to water.
D
It increases the permeability of the collecting duct to water.
Verified step by step guidance1
Understand the role of antidiuretic hormone (ADH) in the body. ADH is a hormone that helps regulate water balance by influencing the kidneys.
Recognize that the primary function of ADH is to increase water reabsorption in the kidneys, specifically in the collecting ducts.
Learn that ADH acts on the cells of the collecting duct by inserting aquaporin channels into their membranes, which increases their permeability to water.
Consider the physiological effect: when the collecting duct becomes more permeable to water, more water is reabsorbed back into the bloodstream, reducing urine volume and concentrating the urine.
Identify the correct statement: ADH increases the permeability of the collecting duct to water, which is crucial for maintaining body fluid balance.
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