In this subchapter:
(1) "General academic teaching institution," "governing board," "institution of higher education," "medical and dental unit," "public junior college," and "university system" have the meanings assigned by Section 61.003.
(2) "System administration" means the administrative officers and employees of a university system who are assigned responsibility in relation to administration of two or more component institutions and are under the supervision of the chancellor or other chief executive officer of the university system.