As used in this part, unless the context otherwise requires:
(1) “Board” means the board of medical examiners, created by § 63-6-101;
(2) “Committee” means the board of medical examiners' committee on physician assistants, established by § 63-19-103;
(3) “Orthopedic physician assistant” (OPA-C) means an individual who renders service in collaboration with a licensed orthopedic physician or surgeon and who has been licensed by the committee on physician assistants and the board of medical examiners pursuant to this chapter as an orthopedic physician assistant;
(4) “Physician” means a person lawfully licensed to practice medicine and surgery pursuant to chapter 6 of this title, osteopathic medicine pursuant to chapter 9 of this title, or podiatry pursuant to chapter 3 of this title; and
(5) “Physician assistant” means an individual who renders services, whether diagnostic or therapeutic, that are acts constituting the practice of medicine or osteopathic medicine and, but for §§ 63-6-204 and 63-9-113, could only be performed by a licensed physician.