What is the most important factor in the long-term regulation of ECF volume?
A) maintenance of salt balance
B) maintenance of water balance
C) the baroreceptor reflex
D) fluid shifts between the interstitial fluid and plasma

Question

Quizplus · Accepted Answer

Maintenance of salt balance is the most important factor in the long-term regulation of ECF volume because salt is the main determinant of ECF osmolarity. The body must maintain a balance of salt intake and excretion to ensure that the ECF osmolarity and volume remain within normal limits. The kidneys play a crucial role in regulating salt balance by adjusting salt excretion in response to changes in salt intake and other physiological factors.

What Is the Most Important Factor in the Long-Term Regulation