Nitrogen cylinders should be stored upright in a well-ventilated, secure area protected from the weather, and the storage area temperatures should not exceed __________

For which of the following periodontal patients are systemic antibiotics indicated? The patient with

a. localized aggressive periodontitis. b. localized gingivitis. c. generalized chronic mild periodontitis. d. generalized chronic severe periodontitis.

Which lung volumes or capacities would decrease in a restrictive pulmonary disorder?

I. IC II. VC III. TLC IV. VT a. II, III, and IV only c. I and II only b. I, II, III, and IV d. I, II, and III only