Beta-2 receptors, with their diverse location in many organ systems, control various aspects of metabolic activity and induce smooth muscle relaxation.

Beta-1 receptors located primarily in the heart mediate cardiac activity.

īeta receptors exist in three distinct forms: beta-1 (B1), beta-2 (B2), and beta-3 (B3). Beta-blockers, as a class of drugs, are primarily used to treat cardiovascular diseases and other conditions.