Angiotensin Converting Enzyme 2: A Double-Edged Sword

(d) Fig. 5.1, on page 20, shows that angiotensin 1 is converted to angiotensin 2. Angiotensin 2 binds to calcium ion channels on smooth muscle cells causing the cells to contract. Suggest how the binding of angiotensin 2 initiates smooth muscle contraction. ................
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