what does white matter contain ?
what does white matter contain？
White matter is found in the deeper tissues of the brain (subcortical). It contains nerve fibers (axons), which are extensions of nerve cells (neurons). Many of these nerve fibers are surrounded by a type of sheath or covering called myelin. Myelin gives the white matter its color.2021年1月28日
Besides,What substance makes white matter white?
myelin sheathThe axons that make up the white matter are covered in a white substance called myelin sheath. Myelin sheath is a sleeve of fatty tissue that insulates the axons and gives white matter its white appearance.
Beside above,Does white matter contain cell bodies?
White matter does not contain any cell bodies, but mostly contains myelinated nerve fibres. The central region of the spinal cord is grey matter, and the surrounding region is white matter.
One may also ask,What does white matter so?
In the most general sense, the gray matter of the brain facilitates information processing, and the white matter facilitates information transfer; both are critical for efﬁcient operation of the neural networks responsible for a speciﬁc mental domain.
Keeping this in consideration,Does white matter have fat?
White matter areas of the brain mainly consist of myelinated axons, which are long relays that extend out from the soma, and which are whiteish in color due to the relatively high lipid fat content of the myelin protein that sheathes them, These form connections between brain cells, and white matter is typically ...
It consists of bundles of axons, or tracts, which are the long, slender projections of nerve cells. As the name suggests, white matter is whiter than gray matter, and its famous whiteness is due to a waxy coating called myelin, which is found on each of the axons.
White matter changes (WMC) are defined as areas with high signal intensities on T2-weighted MRI and as areas with low attenuation on CT. The mechanisms for development of WMC are not fully understood, but several histopathologic correlates have been reported.
The gray matter is the areas where the actual "processing" is done whereas the white matter provides the communication between different gray matter areas and between the gray matter and the rest of the body. The neurons in the gray matter consist of neuronal cell bodies and their dendrites.
Brain tissue is composed of neuronal, glial and endothelial cells, and although there must be biological rules that determine the numbers of cells of each subtype and the volumes (or masses) occupied by them, little is known about such rules, if they indeed exist.
White matter tracts in the brain, also known as white matter fibers, are classified into three categories:
- projection fibers.
- association fibers.
- commissural fibers.
What is white matter? White matter is composed of bundles of myelinated axons, which connect various gray matter areas of the brain to each other, and carry nerve impulses between neurons.
White matter does not contain dendrites, which are only found in grey matter along with neural cell bodies and shorter axons.
White matter in brain is known as the cerebral white matter. The white matter deep to the cortical gray matter is responsible for communication between cerebral areas and between the cerebral cortex and lower CNS.