Multiple choice

Which layer of skin cells initiates keratinisation that starts the death of outer layer of skin epidermal cells?

  1. Stratum lucidum

  2. Stratum spinosum

  3. Stratum granulosum

  4. Stratum basale

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The stratum granulosum, the thin middle layer, initiates keratinisation (production of keratin). This process starts the death of epithelial cells.