释义 |
myelin /ˈmʌɪəlɪn /noun [mass noun] Anatomy & PhysiologyA mixture of proteins and phospholipids forming a whitish insulating sheath around many nerve fibres, which increases the speed at which impulses are conducted.It turns out that the bacterium that causes leprosy directly damages a protective sheathing, made of the protein myelin, around many nerve cells....- They then manipulated them in the laboratory to turn them into specialised cells that form myelin, the insulating layer than surrounds nerve fibres.
- For example, multiple sclerosis involves the progressive destruction of the myelin that insulates neural axons.
Derivativesmyelinated adjective ...- Their content of myelinated nerve fibers indicates their origin as branches of the pelvic colonic innervation.
- It also preserved many of the myelinated nerve fibers in treated animals, compared to untreated rats and those that did not receive the triple combination, the researchers found.
- The incompletely myelinated frontal lobes of children only gradually join the grid of electrical activity that operates the brain.
myelination /mʌɪəlɪˈneɪʃ(ə)n/ noun ...- Other innovations in this group of animals include an adaptive immune system similar to that of humans, a closed and pressurized circulatory system, and myelination of the nervous system.
- Hence, neuronal circuitry and myelination are disrupted.
- Next are areas related to memory, then to spatial orientation and to comprehension of language and then we see myelination in language areas.
OriginLate 19th century: from Greek muelos 'marrow' + -in1. |