Identify number 19 on the figure: _______________. 

A "silent" heart attack occurs when:

A. sweating is the only presentation. B. the usual chest pain is not present. C. a sudden dysrhythmia causes death. D. the patient minimizes the chest pain.

The first hour after the onset of a severe injury is the most critical for the accident victim and is referred to as the ____ Hour.

A. Silver B. Golden C. Critical D. Magic