News tagged with white matter

Related topics: brain , magnetic resonance imaging , nerve cells , brain cells , brain injury

Scientists show rise and fall of brain volume

(Medical Xpress)—We can witness our bodies mature, then gradually grow wrinkled and weaker with age, but it is only recently that scientists have been able to track a similar progression in the nerve bundles ...

Sep 19, 2014
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How does fitness affect the aging brain?

We all know that exercise is good for us—it can help us lower blood pressure and cholesterol, maintain a healthy weight, and even improve mood and sleep. But can exercise improve the brain, especially as ...

Apr 01, 2014
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White matter

White matter is one of the two components of the central nervous system and consists mostly of myelinated axons. White matter tissue of the freshly cut brain appears pinkish white to the naked eye because of myelin is composed largely of lipid and a few percent of capillaries. Its white color is due to its usual preservation in formaldehyde. A 20 year-old male has around 176,000 km of myelinated axons in his brain.

The other main component of the brain is grey matter (actually pinkish tan due to blood capillaries). A third colored component found in the brain that appears darker due to higher levels of melanin in dopaminergic neurons than its nearby areas is the substantia nigra.

This text uses material from Wikipedia licensed under CC BY-SA