The principle hormonal change that underlies chronic disease associated with stress is:

Regarding "burnout" and the Emergency Medical Services, which statement is most accurate?

A) Employers are required to have a written plan addressing EMT burnout. B) Burnout can diminish an EMT's ability to provide competent care. C) Research indicates that burnout affects all EMS personnel within a five-year period. D) Burnout often tends to resolve on its own over time.

The ___________ system is a transport system to which oxygenated blood is pumped by the heart and carried throughout the body

Fill in the blank(s) with the appropriate word(s).