Anatomy. a wrapping of myelin around certain nerve axons, serving as an electrical insulator that speeds nerve impulses to muscles and other effectors.Discover More Word History and Origins Origin of myelin sheath1 First recorded in 1895–1900Discover More Example Sentences However, EBV infection has...
(Anatomy) a white tissue forming an insulating sheath (myelin sheath) around certain nerve fibres. Damage to the myelin sheath causes neurological disease, as in multiple sclerosis ˌmyeˈlinicadj Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers...
Other articles where myelin sheath is discussed: muscle disease: Lower motor neuron disease: …caused by degeneration of the myelin sheaths, the insulation around the axons. These are known as demyelinating neuropathies. Symptoms are similar to neuropath
Discover the function and importance of the myelin sheath in the nervous system and its role in nerve impulse conduction.
Nervous System | Definition, Anatomy & Function from Chapter 20 / Lesson 3 252K What does our nervous system do? Learn about the major functions of the nervous system, its main parts, and their specific functions. See pictures and examples. Related...
Definition Myelin is a protein and lipid-rich substance, which is produced by oligodendrocytes in the central nervous system and by Schwann cells in the peripheral nervous system. Current Knowledge Myelin is elaborated into a sheath and wrapped in a concentric fashion around an axon. The deposition...
Thus, formation of myelin topologically resembles rolling up a sleeping bag; the mesaxon winds about the axon, and the cytoplasmic surfaces condense into a compact myelin sheath and form the major dense line. The two external surfaces form the myelin intraperiod line. In the CNS, myelin is ...
called theinternode. The space between the internodes is theNode of Ranvier. The size of the internode and the thickness of the myelin sheath depend on the diameter of the axon it is associated with. The main role of myelin is to insulate the axonal membrane and thus speed the rate of ...
Myelin Sheath Definition, Overview & Functions from Chapter 20 / Lesson 2 121K What is myelin sheath? Learn the definition and function of myelin sheath. Learn about Schwann cells and oligodendrocytes. Learn what happens if myelin is damaged. Related...
(Anatomy) a white tissue forming an insulating sheath (myelin sheath) around certain nerve fibres. Damage to the myelin sheath causes neurological disease, as in multiple sclerosis ˌmyeˈlinicadj Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers...