* [[Important Hormonal Regulators of the Kidney - Anatomy & Physiology#Effects of Angiotensin 2 On Sodium|Angiotensin 2]] and [[Important Hormonal Regulators of the Kidney - Anatomy & Physiology#Aldosterone|Aldosterone]] affect sodium but they also affect ECF volume so only quantity affected not concentration | * [[Important Hormonal Regulators of the Kidney - Anatomy & Physiology#Effects of Angiotensin 2 On Sodium|Angiotensin 2]] and [[Important Hormonal Regulators of the Kidney - Anatomy & Physiology#Aldosterone|Aldosterone]] affect sodium but they also affect ECF volume so only quantity affected not concentration |