Which of the following accounts for the increased osmolality with prolonged exercise in a hot environment?
A. The decreased blood volume due to increased sweating and lack of water intake increase the blood osmolality.
B. ADH production triggers the increased reabsorption of water in renal tubules trigger the increase in blood osmolality.
C. The osmoreceptors trigger the thirst mechanism, triggering an increase in blood osmolality.
D. The increased production of aldosterone leads to an increase in the blood osmolality.
Answer: A
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