What is white matter made up of?
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.
What are the types of white matter?
There are three main kinds of white matter tracts: projection, commissural, and association.
What does white matter in the spinal cord contain?
White matter is one of the two components of the central nervous system and consists mostly of glial cells and myelinated axons. The white matter is white because of the fatty substance ( myelin ) that surrounds the nerve fibers. Myelin acts as an electrical insulation.
What makes up the white matter of the brain quizlet?
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.
What is white matter made of quizlet?
Which is the primary component of white matter?
White matter is composed largely of myelinated axons. White matter is one of the two components of the central nervous system (CNS). It consists mostly of glial cells and myelinated axons and forms the bulk of the deep parts of the cerebrum and the superficial parts of the spinal cord.
What white matter means?
: neural tissue especially of the brain and spinal cord that consists largely of myelinated nerve fibers bundled into tracts, has a whitish color, and typically underlies the cortical gray matter.
What is the composition of white matter in the central nervous system quizlet?
The white matter composed of myelinated and unmyelinated axons.
What does the white matter consist of why is it white and what might this indicate about regions composed of large amounts of white matter?
The white matter is white because of the fatty substance (myelin) that surrounds the nerve fibers (axons). This myelin is found in almost all long nerve fibers, and acts as an electrical insulation. This is important because it allows the messages to pass quickly from place to place.
What makes white matter appear white quizlet?
Appears white because of its abundance of myelin. It contains bundles of axons(called tracts) that carry impulses from one part of the nervous system to another.
Why is white matter white quizlet?
Why is white matter white? The white matter of the CNS appears white because the majority of the nerve fibers in these regions are myelinated.
What type of neurons are in white matter?
The white matter (WM) of the adult human neocortex contains the so-called “interstitial neurons”.
What is the difference between a white matter and grey matter?
The basic colourations of both tissues have been the basis for the naming,and their colours can be considered to distinguish the two.
What is white matter of the nervous system made up of?
White matter refers to areas of the central nervous system (CNS) that are mainly made up of myelinated axons, also called tracts. Long thought to be passive tissue, white matter affects learning and brain functions, modulating the distribution of action potentials, acting as a relay and coordinating communication between different brain regions.
What is white matter in the brain made of?
White matter is made up primarily of axons of nerve cells and full of myelin, which is a whitish fatty material. It derives its name from its color appearance, which is white when exposed. It works with gray matter, a non-myelinated part of the brain responsible for sending sensory and motor stimulus to…
What is the function of white matter?
White matter is the commonly used term for the myelinated axons that provide connections between neurons, or grey matter. The main function of white matter in the brain is to regulate the electrical signals in axons.