All powers of the corporation shall be exercised by the board of directors or pursuant to its authority. The directors shall be elected by the county commission for staggered terms of office as follows: two years, three years, four years, five years and six years. Thereafter the term of office of each director shall be six years. If any director resigns or dies or becomes incapable of acting as a director or ceases to reside in the county, the governing body shall elect a successor to serve for the unexpired term. Directors shall be eligible for reelection by the county commission to succeed themselves in office. A majority of the members of the board shall constitute a quorum for the transaction of business. The corporation shall have a president, a vice-president, a secretary and a treasurer, but the office of secretary and treasurer may be held by the same person. All officers shall be elected by the board. The members of the board and the officers shall serve without compensation, except that they may be reimbursed for actual expenses incurred in the performance of their duties. All proceedings of the board shall be reduced to writing by the secretary of the corporation and recorded in a well-bound book. Copies of such proceedings, when certified by the secretary of the corporation under its seal, shall be received in all courts as evidence of the matters and things therein certified.