Excretory Products And Their Elimination Question 27
Question: Diabetes insipidus is a condition in which a person is unable to produce sufficient levels of the hormone ADH. The hormone increases the permeability of water of the second (distal) convoluted tubule and collecting duct in the kidney nephrons. What is produced as a result?
Options:
A) Large volumes of concentrated urine
B) Large volumes of dilute urine
C) Small volumes of concentrated urine
D) Small volumes of dilute urine
Show Answer
Answer:
Correct Answer: B
Solution:
[b] If the walls of the collecting duct are water-permeable, water leaves the ducts to pass into the hyperosmotic surrounding and concentrated urine is produced.
Thus, when there is insufficient ADH, less water is reabsorbed and more dilute urine is produced in copious amounts.
BETA
