T. Clark Brelje, Ph.D.
University of Minnesota
Department of Genetics, Cell Biology and Development
6-160 Jackson Hall
321 Church St SE
Minneapolis, MN 55455
Robert L. Sorenson, Ph.D.
University of Minnesota
Department of Genetics, Cell Biology and Development
6-160 Jackson Hall
321 Church St SE
Minneapolis, MN 55455
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Myelinating - forms a segment of the myelin sheath around a single axon. A thin rim of cytoplasm surrounds the myelin sheath. (The Schwann cell body is not visible.)
Speeds the conduction of nerve impulses.
Nonmyelinating (#1 and #2) - completely (or partially) ensheath multiple nonyelinated axons in cytoplasmic invaginations. (The Schwann cell bodies that enclose other axons are not visible.)
Basal Lamina (purple) - surrounds the outer surface of Schwann cells.
Endonerium - connective tissue that surrounds Schwann cells. Many collagen fibrils are seen in cross-section.