PSYC 100A Chapter Notes - Chapter 2: Pituitary Gland, Dendrite, Myelin

• School: University of Victoria
• Department: Psychology
• Course: PSYC 100A
• Professor: Smith Martin

Document Summary

Psychology chapter 2 - biology of the mind. Phrenology: studying bumps on the skull: created by franz gull, localization of function: focus of phrenology, in which they believed that various brain regions have particular functions. Glial cells: cells in the nervous system that support, nourish & protect neurons: more complex the brain, more # of glial cells to neurons. Action potential: a neural impulse (brief electrical charge down the axon: dendrites cell body axon dendrite of another neuron . Resting potential: state of a neuron in which it is positively charges outside, & negatively charged inside. Selectively permeable: axon"s surface is very selective about what it lets in. Depolarization: positively charged sodium ions ood through cell membrane. Refractory period: resting period after the neuron has red: loss of positive/negative inside/outside charge differences, allows time to pump the na ions back outside. Threshold: level of stimuli required to trigger a neural impulse.