An obstacle, whether physical or procedural, that prevents an employee from performing the duties of the job is called what?

Depolarization of the ventricles is represented by:

A) QRS complex B) T wave C) P wave D) J point

In the dry heat therapy called ________, the patient places the affected body part into a container of glass beads that are heated and agitated with hot air. 

Fill in the blank(s) with the appropriate word(s).