Wreb practice exam 1 LA questions with correct answers

**Which of the following local anesthesic blocks uses pressure anesthesia of the tissues to reduce pt discomfort? A. Infraorbital block B. Inferior alveolar block C. Buccal block D. Greater palatine block CORRECT ANSWER D. Greater palatine block Esters have a shorter half-life than amides due to which of the following? A. Amides are broke down into the liver B. Esters are broken down in the blood plasma C. Esters are eliminated from the body via the kidneys D. Amides are eliminated from the body via the kidneys CORRECT ANSWER Ccc ** In the dissociation of local anesthetics, diffusion of the LA occurs best in which of the following situations? A. When there are more free base molecules available B. When the pH is lower in the tissues C. When there are more cations available D. When the pH is neutral CORRECT ANSWER Cccc