1. The board of trustees is authorized to use the city counselor of the specified cities as a legal advisor to the board of trustees and may also appoint an attorney-at-law or firm of attorneys-at-law to serve as the legal advisor and consultant to the board of trustees and to represent the system and the board of trustees in all legal proceedings.

2. The board of trustees shall designate a medical board which shall arrange for and pass upon all medical examinations required under the provisions of sections 86.200 to 86.366. Such medical board shall investigate all essential statements as to physical or mental conditions made by or on behalf of a member in connection with an application for disability retirement and shall report in writing to the board of trustees its conclusions and recommendations upon all the matters referred to them.