May require a master's degree and must be a graduate of an accredited physician assistant program. Must meet any state requirements pertaining to a physician assistant. Familiar with standard concepts, practices, and procedures within a particular field. Relies on experience and judgment to plan and accomplish goals.
home / medterms medical dictionary a-z list / ephedra definition Medical Definition of Ephedra Ephedra: A medicinal herb, known scientifically as Ephedra sinica and Ephedra equisetina, also known as mahuang and herbal ecstasy. Ephedra comes from the dried rhizome and root of the plant. The main active ingredients in ephedra are ephedrine and pseudoephedrine which account for the medicinal properties of the herb. Both ephedrine and pseudoephedrine are central nervous system stimulants that act as decongestants but, in high doses, can raise the blood pressure.
Extended-play vinyl record. An extended play (EP) is a musical recording that contains more tracks than a single, but is usually unqualified as an album or LP. EPs generally do not contain as many tracks as albums, and are considered less expensive and time-consuming for an artist to produce than an album. An EP originally referred to specific types of vinyl records other than 78 rpm standard play (SP) and LP, but it is now applied to mid-length CDs and downloads as well.