The Mississippi Veterans Affairs Board shall determine and set conditions and standards for admission and dismissal of all persons to and from the Mississippi State Veterans Home and such additional homes as may be constructed. In addition, the board shall promulgate such rules and regulations as it deems necessary for the government of the Mississippi State Veterans Home and such additional homes as may be constructed. Such rules and regulations shall include the establishment of rates for patient care within the patient's ability to pay. All funds paid to the board by the veteran residents of state veterans homes to fund their monthly expenses at the state veterans homes shall be considered to be special funds held in a fiduciary capacity for the benefit of the residents of the state veterans homes.