PSYA01H3 Lecture Notes - Lecture 8: Central Nervous System, Electrochemical Gradient
Document Summary
Topic: neurons and the nervous system (chapter 3) (review the nervous system chart found below) Central nervous system is the brain and the spinal cord (these are the main control centre) Somatic is the system that can intervene when the goal is strong enough that stops the autonomic system from doing something (example holes in the glove that is carrying the hot plate) We are complex machinery made of simple elements. Neurons send signals along ds a gets n the. Dendrites (tree like structure) receive information from other neurons (different kind of information) information is coming in from the centre of the cell body. Chemicals that are sent have positive or negative charges. At the nucleus there is a chemical decision that shows difference between the positive and negative charges (causes electrochemical gradient), which exceeds the threshold and starts a reaction. Axon in the brain has a coding that insulates the neuron (multiple serosis not enough myelin sheath)
