Multiple choice

Maximum power of division is found in the skin layer

  1. stratum granulosum

  2. stratum malpighi

  3. stratum spinosum

  4. stratum corneum
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Stratum malpighi (also called stratum basale or basal layer) is the deepest layer of the epidermis where maximum cell division (mitosis) occurs. This layer contains continuously dividing stem cells that continuously produce new keratinocytes. The other layers represent stages of keratinocyte differentiation: stratum spinosum (prickle cell layer), stratum granulosum (granular layer), and stratum corneum (dead, keratinized surface layer) have progressively less mitotic activity.

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