The form of government provided in this article shall be known as the "county executive plan," and shall, together with articles 2 and 7 of this charter, govern any county whose voters have adopted it pursuant to this act.
a. 
Each county operating under this article shall be governed by an elected Board of County Commissioners and an elected county executive and by such other officers and employees as may be duly appointed pursuant to this act, general law, or ordinance.
b. 
In each county operating under this article, the term "governing body" of the county shall be construed to include both the Board of County Commissioners and the county executive. For the purpose of the construction of all other applicable statutes, any and all administrative or executive functions heretofore assigned by general law to the Board of County Commissioners shall be exercised by the county executive, and any and all legislative and investigative functions heretofore assigned by general law to the Board of County Commissioners shall be exercised by the board, all in accordance with the separation of powers provided for in section 40:41A-86 of the act of which this act is amendatory.