Changes

** When sodium is reabsorbed water follows it so the volume of the plasma is altered rather than the concentration of sodium changing

** When sodium is reabsorbed water follows it so the volume of the plasma is altered rather than the concentration of sodium changing

** '''Angiotensin 2''' and '''Aldosterone''' affect sodium but they also affect ECF volume so only quantity affected not concentration

** '''Angiotensin 2''' and '''Aldosterone''' affect sodium but they also affect ECF volume so only quantity affected not concentration

** ADH and thirst response also work together to dilute the ECF if concentrations of sodium are high so although there is more NaCl the actual concentration is not really changed.

** [[Pituitary Gland - Anatomy & Physiology #Posterior Pituitary Gland | ADH]] and thirst response also work together to dilute the ECF if concentrations of sodium are high so although there is more NaCl the actual concentration is not really changed.

* If there was no secretion of aldosterone a 20kg dog would excrete 15g per 24 hours

* If there was no secretion of aldosterone a 20kg dog would excrete 15g per 24 hours

* At maximal secretion no significant amount of sodium would be excreted

* At maximal secretion no significant amount of sodium would be excreted