Michigan Compiled Laws, Chapter 333. Health § 333.17201

(a) “Advanced practice registered nurse” or “a.p.r.n.” means a registered professional nurse who has been granted a specialty certification under section 17210  1 in 1 of the following health profession specialty fields:

(b) “Physician” means a physician who is licensed under part 170  2 or part 175.  3

(c) “Practice of nursing” means the systematic application of substantial specialized knowledge and skill, derived from the biological, physical, and behavioral sciences, to the care, treatment, counsel, and health teaching of individuals who are experiencing changes in the normal health processes or who require assistance in the maintenance of health and the prevention or management of illness, injury, or disability.

(d) “Practice of nursing as a licensed practical nurse” or “l.p.n.” means the practice of nursing based on less comprehensive knowledge and skill than that required of a registered professional nurse and performed under the supervision of a registered professional nurse, physician, or dentist.

(e) “Registered professional nurse” or “r.n.” means an individual who is licensed under this part to engage in the practice of nursing which scope of practice includes the teaching, direction, and supervision of less skilled personnel in the performance of delegated nursing activities.