PSY 2301 Lecture Notes - Lecture 4: Dendritic Spine, Central Nervous System, Neuroglia

• School: University of Ottawa
• Department: Psychology
• Course: PSY 2301
• Professor: Andra Smith

Document Summary

Golgi: the nervous system is composed of a network of interconnected fibers: a nerve net. Cajal: nervous system is made of discrete cells, neuron hypothesis. Neurons are the unit of brain function. Carries information to be passed on to other cells. Enable us to receive information, process it, and act. Most behaviors are produced by groups of hundreds or thousands of neurons. Most of your neurons are with you for life and are never replaced. Protrusion from a dendrite that greatly increases its surface are and is the usual point of contact with axons. Juncture of soma and axon where the action potential begins. Knob at the tip of an axon that conveys information to other neurons; also called a terminal button. Gap between one neuron and another neuron. Usually between an end foot of the axon of one neuron and a dendritic spine of another neuron. Dendrite cell body axon end foot. Bring information to the central nervous system.