What is the role of ADH (vasopressin)?
(A) It increases the amount of water reabsorbed in the kidney - HSC - SSCE Biology - Question 2 - 2001 - Paper 1
Question 2
What is the role of ADH (vasopressin)?
(A) It increases the amount of water reabsorbed in the kidney.
(B) It increases the amount of sugar reabsorbed in the kidney.... show full transcript
Worked Solution & Example Answer:What is the role of ADH (vasopressin)?
(A) It increases the amount of water reabsorbed in the kidney - HSC - SSCE Biology - Question 2 - 2001 - Paper 1
Step 1
Identify the function of ADH (vasopressin)
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Answer
ADH, or vasopressin, primarily functions to regulate the water balance in the body. It is secreted by the posterior pituitary gland and acts on the kidneys.
Step 2
Evaluate option (A)
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Answer
Option (A) states that ADH increases the amount of water reabsorbed in the kidney. This is correct as ADH promotes water reabsorption in the collecting ducts of the nephron, leading to concentrated urine.
Step 3
Evaluate option (B)
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Answer
Option (B) states that ADH increases the amount of sugar reabsorbed in the kidney. This is incorrect, as ADH primarily regulates water reabsorption and does not significantly influence sugar reabsorption.
Step 4
Evaluate option (C)
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Answer
Option (C) states that ADH decreases the amount of water reabsorbed in the kidney. This is incorrect; ADH actually increases water reabsorption.
Step 5
Evaluate option (D)
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Answer
Option (D) states that ADH decreases the amount of sugar reabsorbed in the kidney. This is also incorrect as ADH does not have a direct role in sugar reabsorption.
