描述

White substance, named for its relatively light appearance resulting from the lipid content of myelin, refers to axon tracts and commissures.

White substance tissue of the freshly cut brain appears pinkish white to the naked eye because myelin is composed largely of lipid tissue veined with capillaries. Its white color in prepared specimens is due to its usual preservation in formaldehyde.

White substance, long thought to be passive tissue, actively affects how the brain learns and functions. While grey matter is primarily associated with processing and cognition, white substance modulates the distribution of action potentials, acting as a relay and coordinating communication between different brain regions.


This definition incorporates text from the wikipedia website - Wikipedia: The free encyclopedia. (2004, July 22). FL: Wikimedia Foundation, Inc. Retrieved August 10, 2004, from http://www.wikipedia.org

影像

还没有包含这个结构部分的图片。

下载e-Anatomy

手机和平板用户可以在Appstore或GooglePlay下载e-Anatomy

e-Anatomy 在Appstore e-Anatomy 在Googleplay