• Antidiuretic Hormone (ADH)- Inc. H20 reabsorption & urine concentration
• Atrial Natriuretic Hormone (ANH)- Promotes loss of Na+ in urine
• Aldosterone- Increase Na+ absoprtion & Control K+ secretion
• Renin- Regulates Na+ Retention
• Erythropoietin- Stim. inc. RBC production in response to low O2

Renin-Angiotensin System

• (Angiotensin --> Angiotensin I --> Angiotensin II --> Aldosterone)