PS263 Lecture Notes - Reticular Cell, Superior Colliculus, Motor System
Document Summary
Cervical spinal cord: corticospinal tract convey motor information out. Some parts control limbs and some control trunk muscles. Medulla (caudal: wherever the line is on the brain stem is where we are looking at, medial lemniscuses all the way through, corticospinal tract = pyramid. Conveys motor information: a lot of structures named by early, have a lot of nuclei that correspond to cranial nerves, hypoglossal controls the tongue. The area where the fluid from the ventricles travel: touch originates from the dorsal nerves, when they arise up to the medulla to undergo synapse and cross-over where it then continues into the thalamus. Medulla (rostral) higher level of the medulla: new structures at this level that are not at the early caudal level are: Provides axonal connects between all three of the optic nerves. Lateral recti gets pulled one way causes the medial recti to pull the other eye the same way, allowing for smooth movements of the eyes.
