Because fluid loss as sweat is isoosmotic,the baroreceptor reflexes are more important than osmoreceptor activity in restoring extracellular fluid volume after sweating.

Question

Quizplus · Accepted Answer

Sweat is hypotonic compared to body fluids, meaning it has a lower concentration of solutes. Therefore, when we sweat, we lose more water than solutes, leading to an increase in the osmolality of the extracellular fluid. This change is detected by osmoreceptors, which play a crucial role in restoring fluid balance by stimulating thirst and antidiuretic hormone release, rather than primarily relying on baroreceptor reflexes, which respond to changes in blood pressure.

Because Fluid Loss as Sweat Is Isoosmotic,the Baroreceptor Reflexes Are