CNS: Spinal Cord Function. Communication between the Brain and the PNS. Example: hand touched sensory fibers generate nerve impulses passes through sensory neurons spinal cord ascending tract brain.
Midbrain – relay station for tracts
Pons – contains bundles of axons traveling between the cerebellum and the rest of the CNS.
Medulla Oblongata - contains a lot of reflex centers for controlling heartbeat, breathing, and vasoconstriction.