What is beta blocker? How to use in English

The term "beta blocker" refers to a group of medications used to manage various medical conditions, such as high blood pressure, heart arrhythmias, migraines, and anxiety disorders. These drugs work by blocking the effects of epinephrine (adrenaline) and norepinephrine, which are hormones released by the body in response to stress. More specifically, beta blockers bind to beta-adrenergic receptors in the body, preventing the activation of these receptors by epinephrine and norepinephrine. This reduces the heart's rate and force of contraction, as well as its sensitivity to external triggers such as exercise or stress. This makes beta blockers useful for controlling symptoms in conditions where over-stimulation of the heart is a problem, such as hypertension, arrhythmias, and anxiety disorders. The term "beta blocker" comes from the fact that these medications block the beta-adrenergic receptors, which was discovered during the development and testing of these drugs in the late 1950s and early 1960s. Prior to this discovery, these drugs were referred to as "sympathomimetics" or "sympatholytics" based on their ability to either mimic or oppose the effects of the sympathetic nervous system, which is responsible for the "fight or flight" response in the body. Today, "beta blocker" is the widely accepted and commonly used term to describe this class of medications.