PSY100H1 Chapter Notes - Chapter 3: Myelin, Neuroglia, Action Potential

• School: UTSG
• Department: Psychology
• Course: PSY100H1
• Professor: .

Document Summary

Neuron: basic unit of the nervous system; operates through electrical impulses, which communicate with other neurons through chemical signals; neurons receive, integrate, and transmit info in the nervous system. > sensory neurons: detect info from the physical world and pass that info along the brain = afferent. > somatosensory: sensory nerves that provide info from muscles. > motor neurons: efferent (transmit signals from the brain to the muscles) neurons direct muscles to contract or relax; produces movement. > interneurons: communicates only with other neurons, typically within a specific brain region. > brain sends message via motor neurons -> receptors in your skin and muscles send back messages through sensory neurons. > dendrites: branchlike extensions of the neuron that detect info from other neurons. > cell body: info from neurons is collected and processed. > axon: long narrow outgrowth of a neuron where info is transmitted to other neurons.