Mich. Comp. Laws § 550.1305

Sec. 305. (1) A health care corporation may establish a corporate body. The corporate body shall consist of individuals selected in the same manner as individuals are selected to serve as nonpublic members on the board of directors. The size of the corporate body shall be such that, for each nonpublic voting director on the board of directors of the corporation, there are 2 members of the corporate body. The 4 public members selected pursuant to section 301(2) shall be considered to be members of the corporate body as well as members of the board of directors. An additional 4 public members shall be appointed to the corporate body by the governor by and with the advice and consent of the senate, 2 of whom shall be retired individuals 62 years of age or older. (2) Members of the corporate body may serve on committees of the board of directors. A member of the corporate body may be selected for membership on the board of directors, provided that the selection is made in accordance with the provisions of this part governing the selection of voting directors of the board.