Formation of the medial lemniscus is now almost complete. It seems to be squeezed into a vertical band as it tries to get by the two inferior olives. Note that the central canal of the spinal cord is now opening up to form the fourth ventricle, roofed by choroid plexus.

Recognize that at this level, sensory information from the lower part of the body (red) travels in the ventral part of the medial lemniscus, and information from the upper part of the body