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Question 17 of 20 : Select the best answer for the question. 17. Which stimulus activates the bodys thirst mechanism? O A. I

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Ans:- 17,

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Decrease in blood volume, stimulus activates the body's thirst mechanism because thirst mechanism is an essential mechanism which is involved in fluid balance. It arises from lack of fluids or an increase in the concentration of certain osmolites such as salt. If the fluid volume of the body falls below a certain threshold or the osmolites concentration becomes too high , the brain signals thirst .

Rest of the options does play any role in the stimulation of thirst mechanism.

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