The board of directors may establish those advisory councils and, unless otherwise provided in the articles of incorporation or bylaws, those committees it considers necessary to perform its duties. Members of the corporate body may serve on committees of the board of directors. With respect to committees of the board, the bylaws shall include provisions regarding all of the following:

  (a) Provisions which assure that the membership of each committee provides for representation of all of the components of directors, as defined in the bylaws, to the greatest extent practicable.

  (b) Provisions regarding emergency meetings of the executive committee of the health care corporation, and action by that committee on behalf of the board in cases of emergency, as defined by the bylaws.