<prompt> Group B nerve fibres are situated inMuscle spindlesFibres carrying pain sensationPreganglionic autonomic fibresPost ganglionic autonomic fibres  <response>: Types of nerve fibersfibers are fast fibers.- Aα- Somatic motor to extrafusal fibers of muscle spindle, proprioception- Aβ- Kinesthetic, pressure and touch- Aγ- Motor to intrafusal fibers of muscle spindle- Aδ- Pain, temperature, touch and pressure- B fibers- Autonomic preganglionic Myelinated- C fibers- Pain, temperature, autonomic postganglionic mainly sympathetic 