Allergy may occur due to the inclusion of ________ preservatives in vasoconstrictor-containing solutions of local anesthetic drugs

The fourth heart sound, S4, is:

A) an atrial gallop sound. B) a ventricular gallop sound. C) a high-pitched sound at the base of the heart. D) the "dub" of "dee-lub-dub."

A side-to-side or lateral curvature of the spine is ____

A) scoliosis B) kyphosis C) lordosis D) sacrospinous