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.
Adipocytes also have an external lamina
Famous quotes containing the word external:
“My grief lies all within,
And these external manners of laments
Are merely shadows to the unseen grief
That swells with silence in the tortured soul.
There lies the substance.”
—William Shakespeare (1564–1616)