PHS 3341 Lecture Notes - Lecture 4: Taste, Autonomic Nervous System, Skeletal Muscle
Document Summary
Descending tracts consist of projections of cerebral cortex to innervate motor neurons. Spinal cords have reflex connections, some sensory input will synapse into motor neurons causing reflex reactions (ex. withdrawal response) Movement collecting sensory neurons is crossed (the command) is on the other side of the brain (r hand passed to l sensory cortex) Very important nerves that exist through small aperatures (called cranial nerves) consist of 12, 10 are true nerves: olofactory nerve is not true, optic nerve is not true central tract. This is true because true nerves are myelinated by schwann cells and these are not. Trigeminal nerve supplies sensory for face and also muscles of mastication, mixed nerve, sensory and motor axons. Vagus *important responsible for majority of parasympathetic control over nerves and glands. Accessory nerve not super important, innervates muscles in shrugging. Gray matter surrounding by white, blue is ascending tracts, green depicts the opposite descending tracts. What is the storage form of glucose glycogen.
