What structures are found in white matter?

What structures are found in white matter?

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.

Which structure makes up most of the white matter of the brain?

White matter is named for its relatively light appearance resulting from the lipid content of myelin. However, the tissue of the freshly cut brain appears pinkish-white to the naked eye because myelin is composed largely of lipid tissue veined with capillaries….

White matter
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Anatomical terminology

What structures are predominantly found in the white matter of the spinal cord?

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 is the function of the white matter?

Function. 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.

Where does the white matter in the brain come from?

White matter is specific for containing myelinated axons ( 1 ). These structures are long relays. They extend out from the neuron bodies. As their color is whiteish, these structures are called the white matter. The color comes from a high lipid fat content in myelin. This structure connects the brain cells and is distributed in tracts or bundles.

Where are oligodendrocytes most abundant in white matter?

Oligodendrocytes are most abundant in white matter (Fig.10.1), but they also occur in gray matter, sometimes as satellites to neurons ( Fig. 12.3 ).

Where is the highest concentration of gray matter?

It is easy to detect where the gray matter concentration is the highest. Simply put, we look for the neuronal cell bodies. We know that they prevail in the cerebellum, brain stem or truncus encephali, and the cerebrum. The majority of the neurons are located in the cerebellum ( 1 ).

What makes up the white matter of the brain?

White matter is tissue that includes nerve fibers (axons), which connect nerve cells. A fatty tissue called myelin covers the axons. These axons connect the neurons of the brain and spinal cord and signal nerve cells to communicate with one another.

Oligodendrocytes are most abundant in white matter (Fig.10.1), but they also occur in gray matter, sometimes as satellites to neurons ( Fig. 12.3 ).

What do you need to know about white matter disease?

White matter disease, or leukoaraiosis, involves the degeneration of white matter in the brain. White matter is tissue that includes nerve fibers (axons), which connect nerve cells. A fatty tissue called myelin covers the axons. These axons connect the neurons of the brain and spinal cord and signal nerve cells to communicate with one another.

What’s the difference between white matter and gray matter?

Gray matter is peculiar for containing the neuron cell bodies. The scientific name for the neuron bodies is soma ( 1 ). White matter is specific for containing myelinated axons ( 1 ). These structures are long relays. They extend out from the neuron bodies. As their color is whiteish, these structures are called the white matter.