Skin SciencesQuestion 31 of 100

Which sequence correctly lists the layers of the epidermis from deepest to most superficial?

a.Stratum corneum, lucidum, granulosum, spinosum, basale
b.Stratum granulosum, basale, spinosum, lucidum, corneum
c.Stratum basale, spinosum, granulosum, lucidum, corneum
d.Stratum spinosum, basale, corneum, granulosum, lucidum

Explanation

New cells are produced in the stratum basale and travel upward through the spinosum, granulosum, and lucidum before reaching the corneum, the dead keratinized surface layer. The other sequences reverse or scramble the order. Remembering that the basale sits on the dermis and the corneum faces the outside world makes the direction easy to recall.

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