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

The most reliable labeling method for avoiding transcription errors in specimen collection is:

A) handwritten labels at the patient's bedside B) bar-coded computerized labels C) addressograph labels D) none of the above

The heart and the system of tubes through which blood travels (arteries, ____, and capillaries) are very complex and vital systems.

A. hormones B. veins C. lungs D. lymph nodes