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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Which of the following is most impoant for sodium and water retention in response to hypovolemia?
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The correct answer is  The renin-angiotensin system plays a key role in body&;s response to hypovolemia. The plasma concentration of renin is the rate limiting step in the renin-angiotensin system; it is the major determinant of plasma angiotensin II concentration. Angiotensin II stimulates the aldosterone and ADH secretion; it also constricts the blood vessels and causes thirst, which helps in maintaining blood pressure. Ref: Ganong&;s Review of Medical Physiology 26th edition Pgno: 689,690