The formation and action of angiotensin II can be summarized as follows: It is synthesized either when blood pressure is or the division is activated. It causes a(n) in resistance, in fluid output (which helps to maintain blood volume and blood pressure), and an increase in blood (if fluid intake occurs

low, sympathetic, an increase, decrease, pressure  

Explanation:

Angiotensin II is a peptide hormone whose primary function is to increase blood pressure by different mechanisms of action including vasoconstriction and sympathetic nervous stimulation. This hormone is produced by the action of the enzyme angiotensin-converting enzyme (ACE). Angiotensin II may act on the central nervous system (CNS) to increase antidiuretic hormone (ADH) levels, and on the arterial smooth muscle cells to trigger vasoconstriction. Angiotensin II induces the release of ADH and aldosterone hormones in order to increase blood pressure. When blood pressure returns to normal values, circulating Angiotensin II levels are decreased by negative feedback.

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