PSYCH 1101 Chapter Notes - Chapter 3: Peripheral Nervous System, Parasympathetic Nervous System, Sensory Neuron

• School: Cornell University
• Department: Psychology
• Course: PSYCH 1101
• Professor: David Pizarro

Document Summary

Neurons: the origin of behavior: neurons in nervous system that communicate information processing tasks, approximately 100 billion nerve cells in brain, cells in brain thoughts, feelings, behaviors. Multiple sclerosis composed of glial cells: support cells found in nervous system, 10-50 x more than neurons, variety of functions digest parts of dead neurons, nutritional and physical support, form myelin. Convey info to brain (via spinal cord) Receive signals for light, sound, touch, taste and smell: motor. Carry signals from spinal cord to muscles movement. Often have long axons to stretch to muscles: interneurons. Most of nervous system comprised of these. Work together in small circuits to perform tasks (simple and complicated) Neurons specialized by location: purkinje cells. Interneuron carrying information from cerebellum to rest of brain and spinal cord. Dense, elaborate, bush-like dendrites: pyramidal cells. Single long dendrite along many small ones: bipolar cells.