Nasmyth Membrane — NDEB AFK MCQ
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Correct answer: D — Reduced enamel epithelium
The Nasmyth membrane (primary enamel cuticle) is the last product of the ameloblasts and is deposited by the reduced enamel epithelium, which is the collapsed ameloblast layer covering the enamel surface after maturation. It is removed by mastication shortly after eruption. It is sometimes confused with the acquired enamel pellicle, which is a salivary protein film deposited post-eruption.
Reference: Nanci – Ten Cate's Oral Histology, 9th ed., 2017