<prompt> All are true regarding coicospinal tract except?Also called pyramidal tractMaximum fibers arise from primary motor coexForms pyramids in medulla80 fibers are crossed  <response>: Ans. is b I,e,, Maximum fibers arise from primary motor coexRef Principles of medical physiology p.238-239Coicospinal tract is the most impoant tract through which the motor coex controls the activity of the ventral horn cells alpha-motor neurons in the spinal cord.It is also called pyramidal tract because they form the pyramid of the medulla. 