Receptors, Adrenergic, beta-2

**Definition:** A subclass of beta-adrenergic receptors (RECEPTORS, ADRENERGIC, BETA). The adrenergic beta-2 receptors are more sensitive to EPINEPHRINE than to NOREPINEPHRINE and have a high affinity for the agonist TERBUTALINE. They are widespread, with clinically important roles in SKELETAL MUSCLE; LIVER; and vascular, bronchial, gastrointestinal, and genitourinary SMOOTH MUSCLE.

**Tree numbers:** - D12.776.543.750.670.300.300.340.200 - D12.776.543.750.695.150.300.340.725 - D12.776.543.750.720.330.300.340.200

**Synonyms:** - beta 2 Adrenergic Receptors - Receptor, Adrenergic, beta-2 - Adrenergic Receptor, beta-2 - Receptors, beta-2 Adrenergic - Adrenergic beta-2 Receptors - beta-2 Adrenergic Receptors