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What happens when catecholamines bind to the alpha receptors?

What happens when catecholamines bind to the alpha receptors? Correct Answer Inhibits adenylyl cyclase

Catecholamines suppress adenyl cyclase when bound to alpha-receptors, thereby decreasing the level of intracellular c-AMP. The action of the alpha-receptor is mediated by decreasing the amount of intracellular c-AMP.

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