This chapter does not prohibit: The furnishing of nursing assistance in an emergency; the practice of any legally qualified nurse of another state, who is employed by the United States government or any bureau, division, or agency thereof, while in the discharge of his or her official duties; the practice of nursing by students enrolled in approved schools of nursing, as may be incidental to their course of study, nor shall it prohibit such students working as nursing aides; the practice of any currently licensed registered nurse or licensed practical nurse of another state whose employment responsibilities include transporting patients into, out of, or through this state or who is presenting educational programs or consultative services within this state not to exceed 30 days; persons, including nursing aides, orderlies, and attendants, carrying out duties necessary for the support of nursing services, including those duties which involve supportive nursing services performed in hospitals and elsewhere under the direction of licensed physicians or dentists, or under the supervision of professional nurses licensed hereunder, nor gratuitous nursing of the sick by friends or members of the family, nor the care of the sick when done in accordance with the practice of religious principles or tenets of any well recognized church or denomination which relies upon prayer or spiritual means alone for healing.