In the initial assessment, one of the first steps after checking the scene for safety purposes and donning BSI is to establish and maintain head and neck stabilization if the patient is unconscious or a traumatic injury is suspected.

Which of the following heat emergencies requires immediate cooling to save the person's life?

a. heat stroke c. heat exhalation b. heat cramps d. sunburn

As the actual focal spot size increases, the effective focal spot size

a. increases. b.decreases. c. remains the same. d. cannot be determined.