<prompt> Arrange the following sequentially in the descending order of nerve impulse transmission velocity: A. C B. Aa C. B D. AdA-D-C-BB-D-C-AA-C-D-BC-A-B-D  <response>: Erlanger Gassers Classificaiton of sensory and motor neurons Fiber type Functions Fiber diameter um Conduction velocity msec Aa Proprioception, somatic motor 12-20 70-120 Ab Touch, pressure 5-12 30-70 Ag Motor to muscle spindles 3-6 15-30 Ad Pain, temperature 2-5 12-30 B Preganglionic autonomic 3 3-15 C dorsal root Pain, temperature 0.4-1.2 0.5-2 C Sympathetic Postganglionic sympathetic 0.3-1.3 0.7-2.3 