The said board, or their duly authorized agent, may take and receive such bodies so delivered as aforesaid, and shall, upon receiving them, distribute and deliver them proportionally and equitably to and among the medical and dental schools and medical and dental colleges of the Commonwealth. If additional bodies are available beyond the needs of the medical and dental schools and colleges of the Commonwealth, such bodies may be distributed upon request to physicians and surgeons and to other schools and colleges giving courses in science in which the use of cadaveric material would be advantageous, or may be loaned for demonstration or examination purposes to the State Examining Boards, and to recognized associations of licensed undertakers. The cost of such bodies, including preparation, special handling, and a proportionate share of the overhead cost of the board, shall be collected by said board from such physicians, surgeons, schools, colleges, State Examining Boards, and associations of licensed undertakers, to whom or to which bodies are distributed or loaned.