Doctor insights on:
Diseases Of The White Matter Of The Brain
Communication: "white matter" refers to the nerve fibers that allow communication between nerve cells -- along with myelin, a fatty sheath that covers the them. Nerve cell bodies are "gray matter." white matter is below the brain's surface layer, and can be followed all the way down the spinal cord. Strokes can injure these areas; some people have cognitive changes as well as physical symptoms afterwards. ...Read more
White matter is one of the two components of the central nervous system and consists 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 ...Read more
Nonspecific: The white cells indicate local inflammation, perhaps the lingering signs of a central nervous system infection. However, this can be present in other conditions, such as arteritis, sarcoid, multiple sclerosis, carcinomatous meningitis, etc. Perhaps would be explained by your doctor as to why spinal tap was done. ...Read more
Almost correct: The gray matter (nervous system tissue with cell bodies) is inside the cord, surrounded by white matter (axons: nerve fibers going to & from the brain). While there is gray matter on the surface of the brain, it is also present in collections deep inside the brain. The organization of the central nervous system is quite complex. ...Read more
What is the overall name for the two large parts of the brain not including the brainstem and cerebellum?
Addiction definition: There are various ways of defining addiction, but basically it consists of continuing to use a substance or engage in a behavior despite negative consequences. Usually there is tolerance that develops, (it takes more ; more to get the desired effect). Sometimes there are withdrawal symptoms when you stop, but not always. Many relapse after abstaining for a while, especially without a support group. ...Read more
Only 1 large part: Cerebrum has a left and right hemisphere. ...Read more
Type: What type of canals are you referring to? Named or unnamed? ...Read more
Loss of consciousnes: With lack of blood to the brain you would faint or lose consciousness. If the interruption is prolonged, damage could be permanent. ...Read more
Summary: MS is an autoimmune disorder which affects, brain, spinal cord, and eyes. The most common type is relapsing/remitting, but also primary progressive, secondary progressive, relapsing progressive, and benign. CIS is an initial phase usually of relapsing/remitting, and RIS is finding MS activity on an MRI prior to the disease presenting clinically. ...Read more
High blood pressure: Most commonly high blood pressure (hypertension), which puts a toll on small brain blood vessels which can rupture and bleed, usually at older age. Other causes include brain aneurysms, vascular malformations, tumors, head injury, amyloid angiopathy, use of stimulants including street drugs, medications such as blood thinners, brain surgery, cerebral venous thrombosis etc. ...Read moreSee 1 more doctor answer
Grey: Brain cells have a neutral grey appearance in the living person. Interconnections between these cells can be grey or whitish due to an insulating layer termed myelin. But the cells from which these connections arise are neutral grey. ...Read more
What type of tissue comprises the bulk of the myocardium? Is this different than other parts of the heart?
Why a build up of sulfatides in the white matter of the brain will cause the myelin sheath to deteriorate?
Complex: There are a series of lysosomal enzyme disorders, metachromatic leukodystrophy being one, which can be diagnosed by measurement of aryl sulfatase. Build up of any chemical imbalance especially presence of misfolded proteins, can interfere with normal cellular metabolism, and cause repair attempts to fail. Some of these disorders are associated with inflammation, and this too causes damage. ...Read more
Menigeal: Carcinomatosis (if a cancer) or lymphomtous or leukemic menigitis. The former carries a poor prognosis. It is addressed in children with cranio-spinal irradiation and intr-thecal chemotherapy. In adults with solid tumors, it is a mark of quite advanced disease, causes cranial neuropathy, and weakness. Rarely only site of disease. ...Read more
No such thing: You're allowing colloquial language to mislead you into thinking of "habits" as something special. A "habit" is merely a mode of behavior acquired by frequent repetition. Since behavior always involves the whole brain, so do habits. There's no "habit center" in the brain. ...Read more
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