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** [[Renin-Angiotensin-Aldosterone System (RAAS) - Anatomy & Physiology| Angiotensin 2]] and aldosterone also affect ECF so only quantity affected not concentration
** [[Renin-Angiotensin-Aldosterone System (RAAS) - Anatomy & Physiology| Angiotensin 2]] and aldosterone also affect ECF so only quantity affected not concentration
** ADH and thirst response also work together to dilute the ECF so although there is more NaCl the actual concentration is constant.
** ADH and thirst response also work together to dilute the ECF so although there is more NaCl the actual concentration is constant.
* 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
===Pottassium===
===Pottassium===