Which professional is employed by third-party payers to review health-related claims to determine whether the costs are reasonable and medically necessary based on the patient's diagnosis?

The amplitude of volitional and evoked potentials are measured in

A) microseconds B) millivolts C) microvolts D) milliseconds

Tidal volume is best defined as the

A. volume of air inhaled in a single breath. B. volume of air that remains in the upper airway. C. total volume of air that the lungs are capable of holding. D. volume of air moved in and out of the lungs each minute.