Final answer:
The individual EMT's scope of practice is defined by the EMS system's medical director, NREMT certification exam, and EMT textbooks.
Step-by-step explanation:
The individual EMT's scope of practice is defined by various sources, including:
- EMS system's medical director: Paramedics often work under the direction of a medical doctor, known as the "medical director."
- National Registry of Emergency Medical Technicians (NREMT) certification exam: NREMT certification ensures that EMTs have met certain standards and have the necessary knowledge and skills.
- EMT textbook: EMTs use textbooks that provide guidance on procedures, protocols, and standards of care.