PSYB65H3 Lecture Notes - Lecture 2: Thalamus, Grey Matter, Peripheral Nervous System
Document Summary
Provide a scaffold for a nervous system (ns): provide framework for neurons to travel. Immature astrocytes play critical role in neurodevelopmental functions: help make up blood brain barrier which protects brain from many substances, play an important role after you get a brain injury. Release hormones to help brain respond to an injury: microglial cells scavengers of the cns, gobble up and eliminate dead neurons. If they didn"t, these dead neurons could contaminate/pollute health neuron function. They start in the brain and go to your spine. And there also ones that start in spine and end up in brain. Cause us to do actions: sensory neurons capture physical info from the environment, ex. Photo receptor are sensory neurons of the eyes. They combine info together so we can make decisions, memories, represent what sound/languages mean. Consequence of selective ions is called membrane potential: the membrane potential inside of a neuron is negative relative to the outside.
