Furthermore, the gray matter is divided into 10 Laminae of Rexed and the white matter is divided into fascicles and funiculi and then further divided into smaller tracts. It is these tracts that we will discuss in this lab.
Tracts are chains of neurons that form pathways.
This pathway sends sensory information to the brain from peripheral receptors. It is an ascending or afferent system. For motor pathways, the first order neurons are in the cerebral cortex. Motor tracts send information out to the SC and eventually the muscles, so it is a descending or efferent system. This lab is mainly a discussion lab, and will be completed mainly as a class discussion.