31. These axons form the corticospinal tract . 32. The lateral corticospinal tract neurons cross the midline in the spinal cord, and controls the limbs and digits. 33. The rubrospinal tract descends with the lateral corticospinal tract , and the remaining three descend with the anterior corticospinal tract. 34. It continues down the corticospinal tracts through the capsule, midbrain, and pons where it arrives at the medullar pyramids. 35. The rubrospinal tract descends with the lateral corticospinal tract, and the remaining three descend with the anterior corticospinal tract . 36. These motor pathways, including the lateral corticospinal tract , are located in the lateral and ventral funiculi of the spinal cord. 37. Normal motor control depends on the development of connections between the axons in the corticospinal tract and the spinal cord. 38. The fibers that do not decussate will pass through the medulla and continue on to form the anterior corticospinal tracts . 39. However, where the corticospinal tract is dominant ( as in primates ), the rubrospinal tract may be considered to be vestigial. 40. The ventral corticospinal tract neurons, the remaining 10 %, stay on the same side of the body, and control the trunk muscles.
