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The injured nerve is identified and exposed so that normal nerve tissue can be examined above and below the level of injury, usually with magnification, using either loupes or an operating microscope. If a large segment of nerve is harmed, as can happen in a crush or stretch injury, the nerve will need to be exposed over a larger area.
The nerves in the spine are a tissue that requires a stem cell population to regenerate. In 2012, a Polish fireman Darek Fidyka , with paraplegia of the spinal cord, underwent a procedure, which involved extracting olfactory ensheathing cells (OECs) from Fidyka's olfactory bulbs , and injecting these stem cells, in vivo, into the site of the ...
Nerve growth factor (NGF) typically has a low level of expression in nerves that are healthy and not growing or developing, but in response to nerve injury NGF expression increases in Schwann cells. This is a mechanism to increase growth and proliferation of Schwann cells at the distal stump in order to prepare for reception of the regenerating ...
Nerve impulses are extremely slow compared to the speed of electricity, where the electric field can propagate with a speed on the order of 50–99% of the speed of light; however, it is very fast compared to the speed of blood flow, with some myelinated neurons conducting at speeds up to 120 m/s (432 km/h or 275 mph) [citation needed].
The median/ulnar nerves move 7.3mm and 9.8mm during elbow flexion and extension at the elbow. The median nerve moves 9.6mm with wrist flexion and extension. [2] This nerve movement also applies to the spinal nerves, which can stretch and slacken with movement of the spine. [4] This nerve gliding happens at intraneurial and extraneurial tissue ...
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Psoriasis occurs when a person’s immune system incorrectly signals the skin cells to produce new cells too quickly. This causes an excess in skin cells that cause patches and scabs.
Brain healing is the process that occurs after the brain has been damaged. If an individual survives brain damage, the brain has a remarkable ability to adapt. When cells in the brain are damaged and die, for instance by stroke, there will be no repair or scar formation for those cells.