Which ions account for over 90% of the positively charged ions in extracellular fluid?

In most areas, an EMS provider who has had an exposure to an infectious disease should do all of the following EXCEPT:

a. immediately washing the infected area with a disinfecting agent. b. getting a medical evaluation. c. getting the proper immunization boosters. d. notifying the agency's infection control liaison.

Which of the following is best described as "the area of contused tissue resulting from penetrating trauma that may be slow to heal due to disrupted blood flow and tissue damage"?

A) Temporary cavity B) Zone of injury C) Zone of coagulation D) Permanent cavity