2nd Messenger for Beta-Adrenergic Receptor

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Beta-Adrenergic Receptor 2nd Messenger system

-In mammals the liberation of glucose and fatty acids can be triggered by epinephrine to Beta-Adrenergic receptors on the surface of liver and adipose cells 

-Epinephrine bound to similar Beta-Adrenergic receptors on heart muscle cells increases the contraction rate = An increased blood supply to tissues 

-When Epinephrine is bound to smooth muscle cells of the intestines; relaxtation 

- Beta and Alpha adrenergic receptors are coupled to different G proteins e.g. Beta bound to G proteins results in the activation of adenyl cyclase and thus an increase in cAMP

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