Where a poem makes reference to another poem or text. For example, the 14th line of The Prelude by William Wordsworth 'The earth was all before me' alludes to one of the final lines of Paradise Lost by John Milton 'The world was all before them'. Paradise Lost, in turn, alludes to the story of Adam and Eve in Genesis.
Beta-blockers are drugs that bind to beta-adrenoceptors and thereby block the binding of norepinephrine and epinephrine to these receptors. This inhibits normal sympathetic effects that act through these receptors. Therefore, beta-blockers are sympatholytic drugs.
A Beta blocker is a prescription drug used to lower blood pressure and reduce heart rate. It counteracts the effects of adrenaline to beta receptors, which are located throughout the body including the nervous system and heart.Beta blockers relax the heart and allow it to beat slower, which reduces blood pressure.eta blockers are used for treating high blood pressure, heart failure, glaucoma, hyperthyroidism, chest pain (angina), migraine headaches, heart attacks, irregular heart rhythm (arrhythmia), certain types of tremors and generalized anxiety disorder.