Tempered glass is ____ glass that has been heat treated to increase its strength.

Which of the following BEST describes a localized cold injury with a clear line of demarcation of its limits?

A) Immersion foot B) Early frostnip C) Deep frostnip D) Late frostbite

The part of the complete ESU circuit that delivers alternating current back from exposed tissue to the ESU generator is the:

a. active electrode pencil b. foot control pedal c. patient return electrode (grounding pad) d. third prong of the grounded plug