The choice between performing a rapid trauma survey or a focused exam depends on:

Each of the following statements regarding the principles of the paralleling technique is correct except one. Which one is the exception?

A) Parallel placement of the image receptor is accomplished using an image receptor holder. B) The central ray of the x-ray beam is directed perpendicular to both the teeth and the image receptor. C) The patient is directed to hold the image receptor in the mouth with a finger or thumb. D) The image receptor is placed parallel to the long axes of the teeth of interest.

What is the term for the movement of gas from the external environment to the alveoli?

A. external respiration B. ventilation C. internal respiration D. osmosis