PSL201Y1 Lecture Notes - Lecture 2: Axon Hillock, Main Source, Ion
Document Summary
The notes only make sense when read alongside the slides. If something"s on the slides, it probably isn"t in my notes. esp = especially. 90-95% of test questions are from lectures. rest is from text. Nervous system at the seat of thinking, feeling, consciousness. Central nervous system (cns) consists of brain and spinal cord. Peripheral nervous system (pns) further divided into afferent (info coming in, i. e. visuals) and efferent info (brain computes info, i. e. : i see a black box) each neuron can connect up to 10 000 other neurons. Pns subdivided into autonomic and somatic efferent system carries info out to systems, i. e. to cardiac system skeletal muscle control regulated by somatic: voluntary control. Cells in cns i. e. neurons neurons are excitable - can generate a signal and carry that signal. Glial cells supporting cells. glued to the system. Case study what would happen if we lost myelienation? multiple sclerosis.