Regulation of Blood Pressure via RAAS

Hard Biology Human Physiology

The regulation of blood pressure is essential for maintaining homeostasis in the human body. Various physiological mechanisms contribute to this regulation, particularly through neural and hormonal pathways. In the context of the renin-angiotensin-aldosterone system (RAAS), which of the following statements is accurate regarding its components and their effects on blood pressure?

Angiotensin II promotes vasodilation and decreases water retention.

Renin, released by the kidneys, converts angiotensinogen to angiotensin I.

Aldosterone increases the excretion of sodium to lower blood volume and pressure.

Angiotensin II decreases the release of aldosterone and ADH (antidiuretic hormone).

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