Discuss the functions and the mechanisms related to fluid balance that activate the Renin-angiotensin-aldosterone-system (RAAS) and release of...

Discuss the functions and the mechanisms related to fluid balance that activate the Renin-angiotensin-aldosterone-system (RAAS) and release of anti-diuretic hormone (ADH). Describe what processes would be triggered related to the RAAS and ADH when a patient experiences heart failure or a patient experiences a hypovolemic state from severe blood loss. Please assist in helping me to expand on this question.