All are true regarding coicospinal tract except?: (A) Also called pyramidal tract, (B) Maximum fibers arise from primary motor coex, (C) Forms pyramids in medulla, (D) 80% fibers are crossed
Answer is B. Ans. is 'b' I,e,, Maximum fibers arise from primary motor coex[Ref 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.