It is appropriate to control the filling of an evacuated blood-collection tube manually.

Private water valves are of the indicating type, for example, a ____ indicator valve (PIV).

A. post B. private C. pressure D. public

What would the PIO2 equal at the summit of Mount Everest where the PB is 253 mm Hg?

a. 43 mm Hg c. 79 mm Hg b. 159 mm Hg d. 100 mm Hg