Professional Organizations UTMB School of Nursing faculty are members of several professional nursing organizations. American Holistic Nurses Association As the definitive voice for holistic nursing, the American Holistic Nurses Association (AHNA) promotes the education of nurses, other health care professionals, and the public in all aspects of holistic caring and healing. AHNA is a non-profit membership association serving more than 5,400 members and 125 local chapters across the U.S. and abroad. American Nurses Association The American Nurses Association (ANA) is the only full-service professional organization representing the interests of the nation's 3.1 million registered nurses through its constituent and state nurses associations and its organizational affiliates. The ANA advances the nursing profession by fostering high standards of nursing practice, promoting the rights of nurses in the workplace, projecting a positive and realistic view of nursing, and by lobbying the Congress and regulatory agencies on health care issues affecting nurses and the public. Texas Nurse Association Texas Nurses Association (TNA) is a statewide, membership-based association of registered nurses (RNs). Founded in 1907, TNA is the oldest professional nursing association in Texas. Its members represent all segments of nursing practice: bedside to administration, consulting to advanced practice, and education to legislation. TNA members come from all practice settings: hospital, home and community health, public health, higher education, long-term care, school health, and policy. And all practice areas. Sigma Theta Tau Alpha Delta Chapter The mission of the Honor Society of Nursing, Sigma Theta Tau International (STTI) is advancing world health and celebrating nursing excellence in scholarship, leadership, and service.