Question

Which of the following segments of the nephron will have its reabsorption ability changed by the...

Which of the following segments of the nephron will have its reabsorption ability changed by the endocrine system?

a. Proximal convoluted tubule

b. Descending loop of Henle

c. ascending loop of Henle

d. distal convoluted tubule

e. Collecting duct

f. D and E

Science   Anatomy-And-Physiology   
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Answer #1
  • The correct answer is option f.D and E.
  • Explanation- In presence of ADH hormone( antidiuretic hormone) secreted by the posterior pituitary, distal convoluted tubule and collecting duct become permeable to water . This results in water reabsorption from distal convoluted tubule and collecting duct . This makes urine more concentrated.
  • In diabetes insipidus , there is absence of ADH.Hence, large quantity of water is excreted through urine.As there is lower amount of water reabsorption takes place in distal convoluted tubule and collecting duct.
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