Adrenergic receptor. Definition

Medical Definition: adrenergic receptor

Molecular complex in the body's cells selectively receives the signal of adrenaline and noradrenaline, and responds becoming a specific cellular response. ± receptors are classified (divided into ± ± -1 and -2) and receivers ² (² -1 and -2). The location of receptors ± y ² and their proportion varies in different organs, tissues and cells (smooth muscle, heart, central nervous system, lymphocytes, etc..) And, therefore, the response to its activation is also diverse. Adrenoceptor ± ² -1 and -1 are located at the postsynaptic membrane of noradrenergic synapses and their function is to receive the signal of noradrenaline released on completion. Adrenoceptor ² ± -2 and -2 are in contact with circulating catecholamines also have a presynaptic location in the noradrenergic terminals with inhibitory function (± -2) or facilitator (² -2) for the release of noradrenaline. There are various drugs that act on these receptors, either stimulating or blocking its action.

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