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Cerebrospinal fluid. The composition of the cerebrospinal fluid is normal

A fluid that constantly circulates in the ventricles of the brain, the cerebrospinal fluid paths, the subarachnoid space of the brain and spinal cord. It protects the brain and spinal cord from mechanical influences, ensures the maintenance of constant intracranial pressure and water-electrolyte homeostasis. It supports trophic and metabolic processes between the blood and the brain. . The total cerebrospinal fluid content in the body is 200 - 400 ml, normally transparent, colorless, constant specific gravity 1.006 - 1.007.
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Cerebrospinal fluid. The composition of the cerebrospinal fluid is normal

  1. SPINAL CORE LIQUID
    Now, after we became acquainted with nerve cells (the mechanism of action of which is the same in all animals) and briefly examined how these cells organized themselves into the nervous system, which became more and more complex during evolution, until it reached its peak in human development, that is, with you and me, the time has come to understand the structure of the nervous system in parts. Central
  2. Spinal Nerves
    Spinal nerves in several respects are very different from cranial nerves. Firstly, its more regular location. The cranial nerves are connected unevenly to the brain, mostly at the point where the bridge connects to the medulla oblongata. On the contrary, the spinal nerves exit the spinal cord at regular intervals, which makes sense if we
  3. THE ROLE OF INFLUENCE ON THE TRANSFER OF INFORMATION
    As a result of an injury, numerous adhesions develop in the spinal canal that disrupt the circulation of cerebrospinal fluid (3,9,14,16,17). For the normal functioning of the spinal conduction pathways, adequate circulation of the cerebrospinal fluid, which is involved in metabolic processes during impulses along these paths, is necessary. Cerebrospinal fluid is an electrolyte and
  4. Water exchange is normal
    An adult consumes approximately 2500 ml of water per day, including approximately 300 ml of water resulting from metabolism. Water loss is about 2500 ml / day, of which 1500 ml is excreted in the urine, 800 ml is evaporated (400 ml through the respiratory tract and 400 ml through the skin), 100 ml is excreted with sweat and another 100 ml with feces. Evaporation water loss plays a very important role in
  5. Calcium metabolism is normal
    The normal daily intake of calcium is 600-800 mg. Absorption occurs mainly in the proximal part of the small intestine. In the intestine, calcium secretion is also carried out, the rate of which is constant and does not depend on absorption. Typically, up to 80% of the calcium consumed is excreted in the feces. Calcium excretion is via the kidneys, averaging 100 mg / day, and can vary from
  6. Interstitial fluid
    Normally, a very small amount of interstitial fluid is in a free state. Most interstitial water is chemically bound to proteoglycans to form a gel. Interstitial fluid pressure is usually negative (about -5 mmHg). With an increase in the volume of interstitial fluid, its pressure rises. When interstitial pressure becomes positive,
  7. Intravascular fluid
    Intravascular fluid (plasma) is delimited by the endothelial lining of blood vessels. Most electrolytes (mainly small ions) pass freely through the endothelium, which explains the almost identical electrolyte composition of plasma and interstitial fluid. At the same time, tight contacts of endothelial cells impede the release of plasma proteins beyond the vascular bed.
  8. Potassium metabolism is normal
    Normally, an adult consumes an average of 80 meq of potassium per day (from 40 to 140 meq). About 70 meq of potassium is excreted in the urine, 10 meq - through the gastrointestinal tract. Renal excretion of potassium ranges from 5 meq / l to 100 meq / l. Almost all potassium filtered by the renal glomeruli is reabsorbed in the proximal tubules and the Henle loop. The excretion of potassium in the urine occurs due to
  9. Metabolism of magnesium is normal
    Adult magnesium intake on average is 20-30 meq / day (240-370 mg / day). Only 30-40% of this amount is absorbed, mainly in the distal small intestine. Magnesium excretion is mainly carried out by the kidneys and averages 6-12 meq / day. Reabsorption of magnesium in the kidneys is extremely effective: 25% of the magnesium filtered in the renal glomeruli undergoes
  10. Cerebrospinal fluid
    Cerebrospinal fluid is located in the ventricles and cisterns of the brain, as well as in the sub-arachnoid space of the central nervous system. The main function of cerebrospinal fluid is to protect the brain from injury. Most of the cerebrospinal fluid is produced in the vascular plexuses of the ventricles of the brain (mainly in the lateral). A certain amount is formed directly in the ependymal cells of the ventricles,
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