PSYC 10a Chapter 3: Psychology Textbook
10 Oct 2015
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Document Summary
100 billion nerve cells in the brain. These are called neurons (cells in the nervous system that communicate with one another to perform information-processing tasks) Major types of neurons: sensory neurons (neurons that receive information from the external world and convey the info to the brain via the spinal cord) Purkinjie cells (interneurons that carry info from the cerebellum to the rest of the brain and spinal cord: some neurons are specialized by location (e. g. bipolar cells and purkinjie cells) Pyramidal cells (neurons that are found in the cerebral cortex and have a triangular shaped body and one long dendrite among many smaller dendrites) Electrical signaling: conducting information within a neuron: resting potential: the origin of the neuron"s electrical properties. Resting potential (the difference in electric charge between the inside and outside of a neuron"s cell membrane)=k+ and a- inside and na+ and cl- outside; k+ can.
