PSYCH261 Lecture Notes - Schwann Cell, Metabotropic Receptor, Interneuron
5 Mar 2013
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Document Summary
Specialized neurons that detect changes in the environment and transmit info to cns. Neurons located in cns that control muscles contraction or gland secretion. Dendrite: branched treelike structure attached to soma, receives info from other neurons. 3 types of neurons caterogizied based on shape. Multipolar neuron: one axon, many dendrites attached to soma. Mitochondria: manufacture energy, major source of energy used by cell in body. Golgi apparatus: produces lysosomes fulled with enzyems to destroy waste. Glue between the cell, holds neurons together, provides nutrition, source of energy, move neurons to avoid neural message contamination. Star attached to different neurons like a net and provide structural support. Provide neurons with nutrients (break down blood glucose into lactate [metabolized fasster than glucose] and store glycogene) Having myelin intact is required for proper function of brain. Fatty covering of axons (aids efficient transmission of electrical signal along the axon) Gaps between segments are nodes of ranvier.
