本题目来源于试卷: Continuity and Change D.9 Homeostasis，类别为 IB生物学
[单选题]
Which row correctly describes thy;gvd t q)4tv9e2fr i ,qlud0(e effect of a decrease in the water b1m kn ,pqpsw6sbx d(gv3.9 9oconcentration of the b (s9npmpwq9bokdvg .3 ,61sx blood?
A. ADH production is Decrease; Permeability of collecting duct is Increase; Urine concentration is Increase
B. ADH production is Decrease; Permeability of collecting duct is Decrease; Urine concentration is Increase
C. ADH production is Increase; Permeability of collecting duct is Increase; Urine concentration is Increase
D. ADH production is Increase; Permeability of collecting duct is Decrease; Urine concentration is Decrease
参考答案: C
本题详细解析:
Choice C is correct because when the water concentration of the blood decreases, ADH production increases. ADH increases the permeability of the collecting duct so that more water is reabsorbed, and this increases the concentration of urine. Choices A and B are incorrect because when the water concentration of the blood decreases, ADH production increases. The increase in ADH production increases the permeability of the collecting duct. Choice D is incorrect because increased ADH production increases the permeability of the collecting duct and increases the concentration of urine.
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