World Library  
Flag as Inappropriate
Email this Article

Axolemma

Article Id: WHEBN0002863900
Reproduction Date:

Title: Axolemma  
Author: World Heritage Encyclopedia
Language: English
Subject: Diffuse axonal injury, Myelin, Nerve fiber, Neurons, Neuroanatomy
Collection: Neuroanatomy, Neurons
Publisher: World Heritage Encyclopedia
Publication
Date:
 

Axolemma

Axolemma
Identifiers
Code TH H2.00.06.1.00003
Anatomical terminology

The axolemma is the cell membrane surrounding an axon. It is responsible for maintaining the membrane potential of the neuron, and it contains ion channels through which ions can flow. When this occurs, the voltage inside the axon changes, and depolarization or hyperpolarization of the membrane can occur. Adequate depolarization can lead to an action potential, which travels down the axon in a self-propagating manner as more ion channels open due to stimulation by the influx of positive ions.[1] An unmyelinated axolemma has a high capacitance which imposes a restraint on the conduction speed.

If the axolemma is damaged, it becomes unable to perform its vital role of maintaining the concentration gradient of ions inside and outside the cell. When ions move down their concentration gradient into the cell, they can cause a number of different cellular processes that may lead to cell damage or cell death.

References

  1. ^ Elaine N. Marieb and Katja Hoehn (2007). Human Anatomy & Physiology (7th ed.). Pearson. pp. 393–412.  

External links

  • Histology image: 22802loa – Histology Learning System at Boston University
This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and USA.gov, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for USA.gov and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
 
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
 
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.
 



Copyright © World Library Foundation. All rights reserved. eBooks from Hawaii eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.