Which epidermal layer is characterized by keratinization and lipid secretion?

Prepare for the VTCT Level 2 Facial and Skincare Test. Revise with flashcards and multiple choice questions, accompanied by insightful explanations. Ace your assessment with confidence!

Multiple Choice

Which epidermal layer is characterized by keratinization and lipid secretion?

Keratinization with lipid secretion occurs in the Stratum Granulosum. In this layer, keratinocytes begin to keratinize as they accumulate keratohyalin granules that help bind keratin fibers, while lamellar bodies release lipids into the spaces between cells to form the waterproof barrier. This combination marks the transition toward the outer, protective layer of the skin. The other layers don’t combine these features: the deepest layer is where cells divide, the spiny layer contains desmosomes and immune cells like Langerhans cells, which are not involved in keratinization.

Keratinization with lipid secretion occurs in the Stratum Granulosum. In this layer, keratinocytes begin to keratinize as they accumulate keratohyalin granules that help bind keratin fibers, while lamellar bodies release lipids into the spaces between cells to form the waterproof barrier. This combination marks the transition toward the outer, protective layer of the skin. The other layers don’t combine these features: the deepest layer is where cells divide, the spiny layer contains desmosomes and immune cells like Langerhans cells, which are not involved in keratinization.

More practice questions