A 57-year-old man with long-standing diabetes mell...

A 57-year-old man with long-standing diabetes mellitus and newly diagnosed hypertension presents to his primary care physician for follow-up. The patient has been trying to alter his dietary habits and now exercises more frequently, but the hypertension has persisted. The patient is started on an angiotensinconverting enzyme inhibitor (ACE inhibitor) with good results. He is instructed to continue this medication and follow up in several months. Questions: 1. What are the effects of angiotensin II？ 2. How would inhibition of ACE decrease blood pressure？