PSYCH 1XX3 Chapter Notes - Chapter 5: Fluid Compartments, Neuroglia, Extracellular Fluid
1 Oct 2016
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Descartes mind and brain separate entities (dualist framework), mind was seen as a separate entity existing outside of our biology yet in control of our actions and thoughts, physical brain serves as a connection between mind and body. Glial cells provide structural support, nourishment, insulation needed by the high profile neurons, rest in bath of ions, chemicals, and blood vasculature, and make up the entity of your brain. Threshold resting voltage is constantly fluctuating around -70mv mark, under influence of nearby neurons and random ion flow a change called threshold - 50mv is reached and action potential is fired: na channels along membrane begin to open and force of diffusion causes positively charge. Na to rush into the neuron, +40mv is reached and na channels close. Positively charged k are pushed out of the cell through leaky potassium channels, when.
