- published: 25 Apr 2014
- views: 59590
White matter is a component of the central nervous system, in the brain and superficial spinal cord, and consists mostly of glial cells and myelinated axons that transmit signals from one region of the cerebrum to another and between the cerebrum and lower brain centers.
White matter 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 matter, 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 matter modulates the distribution of action potentials, acting as a relay and coordinating communication between different brain regions.
White matter is composed of bundles of myelinated nerve cell projections (or axons), which connect various grey matter areas (the locations of nerve cell bodies) of the brain to each other, and carry nerve impulses between neurons. Myelin acts as an insulator, increasing the speed of transmission of all nerve signals.
Description of the gray and white matter of the central nervous system. More free lessons at: http://www.khanacademy.org/video?v=ZZQzMeFoZY0 Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-prep/mcat) for MCAT related content. These videos do not provide medical advice and are for informational purposes only. The videos are not intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of a qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read or seen in any Khan Academy video.
http://braininjuryhelp.com 1-800-992-9447 We have put together a series of videos with Dr. Erin Bigler for a better understanding of the anatomy of the brain and the function of anatomy and what happens when a brain is injured. Dr. Erin Bigler, Brigham Young University, and Attorney Gordon Johnson discuss brain anatomy and the different parts of the brain that can be damaged when subjected to trauma. In this video Dr. Bigler and I are talking generally about two concepts that are fairly important in the general overview understanding of the brain. The first is the two different hemispheres that there are of the brain, and the second would be the difference between gray matter and white matter.
63 minutes of drum and bass, featuring releases from Radicall, Third Law, Oz, Sensus, Tempus, Liz-E, and more in the tracklist. This set kicks off with deep sub bass flavor, then moves on to some deep rollers with bits of rapid break drum tunes. The last 25 minutes section features tracks with deep atmospheric sound, plus liquid tracks for cool-off. Listen on Mixcloud: https://www.mixcloud.com/f1rstpers0n/white-matter/ Grab this mix: http://www.mediafire.com/download/ic81mrbb57o8w2e/White_Matter_-_Deep_Drum_and_Bass_mix.zip Tracklist ============ 00:00 | Radicall - Undercover Transference Recordings 06:20 | Ophlot - Quasar Histeria Records 08:34 | Third Law - Restless 4ORT.NIGHT 11:32 | Klax - Blackball Critical Music 13:46 | Gerra & Stone - Back Hand (DLR's Dogbite Remix) Dispatch...
Neuroanatomy of the White Matter of the Cerebral hemispheres by Dr Ahmed Wael Ibrahim -Association Fibers -Projection Fibers -Commissural Fibers
This tutorial covers the basics of spinal cord white matter.
Imaging of White matter I - Prof Dr. Mamdouh Mahfouz (In Arabic)
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