The long nerve fibers, which is often the nerve fiber of axon have myelin sheath (myelin sheath) covered nerve fiber. Myelin compounds of lipid components. When checking a cross section of myelin sheath with a scanning electron microscope.Discontent (Schwann cell), which is a kind of supporting cells Show that the myelin sheath is a part of the cell membrane, ชวันน์ Part of the axon at the interface between the discontent each cell is an area where no why อีลินหุ้ม membrane.Node of Ranvier (node ofRanvier).
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