Beta-adrenergic agonists or Beta-agonists are medications that relax muscles of the airways, which widens the airways and results in easier breathing. They are a class of sympathomimetic agents which act upon the beta adrenoceptors. In general, pure beta-adrenergic agonists have the opposite function of beta blockers.
Lindsay Ell. About Lindsay Ell. Named one of CMTâs Next Women of Country, Lindsay Ell is a triple threat: accomplished musician, unique vocalist and songwriter. The 26-year-old Calgary native learned to play guitar while traveling with her father to country-bluegrass camps as a young girl.
View. comments. Actress Shay Mitchell has split from her boyfriend of one year, Ryan Silverstein. The Pretty Little Liars star is now said to be 'having fun,' a source revealed to Us Weekly.Another insider revealed that the couple fought frequently throughout their relationship.croll down for video. It's over: Shay Mitchell has broken up with boyfriend of one year Ryan Silverstein. The couple are pictured here at a Lakers basketball game in March. The 27-year-old beauty appears to be making the most of single life as she documents her adventures via her Instagram account.