Which of the following refers to the study of the effects of ionizing radiation on living tissue??

A respiratory rate of 40 breaths/min is required to ventilate an infant with an MVP-10. The in-spiratory and expiratory time settings that would provide 40 breaths/min are which of the fol-lowing? Inspiratory Time Expiratory Time

a. 0.25 s 0.9 s c. 0.75 s 2 s b. 0.5 s 1 s d. 0.95 s 1.75 s

An operculum will disappear once the tooth is

A) orthodontically moved. B) splinted to the adjacent tooth. C) intruded into position. D) extracted.