A sudden interruption or insufficiency of blood supply to the brain is a _______. (Fill in the blank)

A sudden interruption or insufficiency of blood supply to the brain is a _______.
 
  Fill in the blank(s) with correct word

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The portable device that checks the heart rhythm and sends an electrical shock to restore normal rhythm is a
 
  A) cardiopulmonary defibrillator.
  B) automatic external defibrillator.
  C) portable ventilator.
  D) portable pulse automator.

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Which type of burn results when a wet or dry corrosive substance comes in contact with skin or mucous membranes?
 
  A) Radiation
  B) Electrical
  C) Thermal
  D) Chemical

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The potentially life-threatening condition in which a person is not alert and lacks normal sensory awareness of the environment is
 
  A) Semiconsciousness
  B) Unconsciousness
  C) Heat stroke
  D) Anaphylaxis

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The condition that occurs when a person has exerted themselves in a hot environment without adequate hydration is
 
  A) Heat stroke
  B) Heat cramps
  C) Heat exhaustion
  D) Hypothermia