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OverviewHigh Quality Content by WIKIPEDIA articles! The soma (pl. somata or somas), or perikaryon (pl. perikarya), or cyton, is the bulbous end of a neuron, containing the cell nucleus. The word soma comes from the Greek, meaning body ; the soma of a neuron is often called the cell body. There are many different specialized types of neurons, and their sizes vary from as small as about 30 micrometres to over 10 millimetre for some of the largest neurons of invertebrates. The soma contains many organelles, including granules called Nissl granules, which are composed largely of rough endoplasmic reticulum and free polyribosomes. The cell nucleus is a key feature of the soma. The nucleus is the source of most of the RNA that is produced in neurons. In general, most proteins are produced from mRNAs that do not travel far from the cell nucleus. This creates a challenge for supplying new proteins to axon endings that can be a meter or more away from the soma. Full Product DetailsAuthor: Lambert M. Surhone , Mariam T. Tennoe , Susan F. HenssonowPublisher: Betascript Publishing Imprint: Betascript Publishing Dimensions: Width: 22.90cm , Height: 0.20cm , Length: 15.20cm Weight: 0.068kg ISBN: 9786133262881ISBN 10: 6133262885 Pages: 36 Publication Date: 07 October 2010 Audience: General/trade , General Format: Paperback Publisher's Status: Active Availability: In Print  This item will be ordered in for you from one of our suppliers. Upon receipt, we will promptly dispatch it out to you. For in store availability, please contact us. Table of ContentsReviewsAuthor InformationTab Content 6Author Website:Countries AvailableAll regions |
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