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{{Short description|Structure that surrounds the sarcolemma of muscle cells}}”’External lamina”’ is a structure similar to [[basal lamina]] that surrounds the [[sarcolemma]] of muscle cells. It is secreted by [[myocytes]] and consists primarily of [[Collagen type IV]], [[laminin]] and [[perlecan]] (heparan sulfate proteoglycan). Nerve cells, including [[perineurial cells]] and [[Schwann cells]] also have an external lamina-like protective coating.<ref>Wheater’s Functional Histology, 5th ed. Young, Lowe, Stevens and Heath.</ref> |
{{Short description|Structure that surrounds the sarcolemma of muscle cells}}”’External lamina”’ is a structure similar to [[basal lamina]] that surrounds the [[sarcolemma]] of muscle cells. It is secreted by [[myocytes]] and consists primarily of [[Collagen type IV]], [[laminin]] and [[perlecan]] (heparan sulfate proteoglycan). Nerve cells, including [[perineurial cells]] and [[Schwann cells]] also have an external lamina-like protective coating.<ref>Wheater’s Functional Histology, 5th ed. Young, Lowe, Stevens and Heath.</ref> |
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Adipocytes also have an external lamina. |
Adipocytes also have an external lamina. |
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Revision as of 04:56, 12 November 2025
Structure that surrounds the sarcolemma of muscle cells
External lamina is a structure similar to basal lamina that surrounds the sarcolemma of muscle cells. It is secreted by myocytes and consists primarily of Collagen type IV, laminin and perlecan (heparan sulfate proteoglycan). Nerve cells, including perineurial cells and Schwann cells also have an external lamina-like protective coating.[1]
Adipocytes also have an external lamina.
References
- ^ Wheater’s Functional Histology, 5th ed. Young, Lowe, Stevens and Heath.
