In the treatment of hypertension, prazosin _______, whereas propranolol _______.
A) blocks α1-receptors and causes dilation of blood vessels; blocks β-receptors in the heart and decreases the contractile force
B) blocks α1-receptors and causes constriction of blood vessels; activates β-receptors in the heart and increases the contractile force
C) activates α1-receptors and causes dilation of blood vessels; activates β-receptors in the heart and decreases the contractile force
D) activates α1-receptors and causes constriction of blood vessels; blocks β-receptors in the heart and increases the contractile force
Correct Answer:
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