myelin sheath
(Science: anatomy, neurology) An insulating layer surrounding vertebrate peripheral neurons, that dramatically increases the speed of conduction. It is formed by specialised schwann cells, that can wrap around neurons up to 50 times.
myelin sheath
(my-eh-lin) [Gk. myelinos, full of marrow]
In a neuron, an insulating coat of cell membrane from Schwann cells that is interrupted by nodes of Ranvier where saltatory conduction occurs.
myofibril ...
myelin sheath Layers of specialized glial cells, called Schwann cells, that coat the axons of many neurons.
myofibrils Striated contractile microfilaments in skeletal muscle cells. PICTURE
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Myelin sheath
Neuroscience Portal
Dendrites (from Greek dendron, 'tree') are the branched projections of a neuron that act to conduct the electrical stimulation received from other neural cells to the cell body, or soma, ...
myelin sheaths around the axons of their neurons. This permits much more rapid transmission of nerve impulses — a trait probably as important for active vertebrates as their jaws.
an adaptive immune system backing up their innate immune system.
myelin sheath - insulating layer of specialized cell membrane wrapped around vertebrate axons; produced by the oligodendrocytes in the central nervous system (CNS) ...
Some axons are wrapped in a myelin sheath formed from the plasma membranes of specialized glial cells known as Schwann cells. Schwann cells serve as supportive, nutritive, and service facilities for neurons.
The loss of muscle coordination that people with multiple sclerosis face is due to the degeneration of the myelin sheath in classes of neurons that are involved in the movement of muscles.
neurofibril node Regular gaps in a myelin sheath around a nerve fiber; formerly called node of Ranvier.
neurogenic Originating in nervous tissue, as does the rhythmical beat of some arthropod hearts.
Myelinated axon is surrounded by Schwann cells (myelin sheath)
Have nodes of Ranvier and are rich in myelin (lipid)
Table 16-7-1
NEURONE ...
The fibers lose their myelin sheaths as they enter the gray substance and terminate by end ramifications among the nerve cells and their processes.
 See also: Cells, Myelin, Neuron, Muscle, Organ
  
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