ABBREVIATIONS: Epi, epinephrine; NE, norepinephrine; Iso, isoproterenol; GI, gastrointestinal; GU, genitourinary. *This table provides examples of drugs that act on adrenergic receptors and of the location of subtypes of adrenergic receptors.
*At least three subtypes each of a1 and a2 adrenergic receptors are known, but distinctions in their mechanisms of action have not been clearly defined.
*In some species (e.g., rat), metabolic responses in the liver are mediated by a1 adrenergic receptors, whereas in others (e.g., dog) b2 adrenergic receptors are predominantly involved. Both types of receptors appear to contribute to responses in human beings.
§Metabolic responses in adipocytes and certain other tissues with atypical pharmacological characteristics may be mediated by this subtype of receptor. Most b adrenergic receptor antagonists (including propranolol) do not block these responses.
Adrenergic Receptors and Their Effector Systems
a1 Subtypes a2 Subtypes
Was this article helpful?
So maybe instead of being a pencil-neck dweeb, youre a bit of a fatty. Well, thats no problem either. Because this bonus will show you exactly how to burn that fat off AS you put on muscle. By boosting your metabolism and working out the way you normally do, you will get rid of all that chub and gain the hard, rippled muscles youve been dreaming of.