Which of the below are traits associated with the stratum corneum?

Question

BlackTom AI · Accepted Answer

To tackle this question, I’ll evaluate what each statement implies about the stratum corneum, the outermost epidermal layer.
Option 1: 'Is only found in the palm of the hands' — This is incorrect. The stratum corneum exists over nearly all skin surfaces, though its thickness varies by location (e.g., thicker on palms and soles). It is not exclusive to the palms.
Option 2: 'The layer is full of capillaries' — This is false. The epidermis, including the stratum corneum, is avascular; blood vessels run in the dermis beneath, not within the stratum corneum, so capillaries are not present in this layer.
Option 3: 'Cells within this layer are dead' — This is correct. The stratum corneum is composed of dead, flattened keratinocytes (corneocytes) that have shed their nuclei and organelles during maturation, forming a protective, keratin-rich barrier.
Option 4: 'Is capable of cellular mitosis' — This is inaccurate. Mitosis occurs in the stratum basale (the deepest epidermal layer) where cells divide to renew the epidermis; the stratum corneum itself does not divide.
Option 5: 'Is the deepest layer of the epidermis' — This is incorrect. The deepest layer is the stratum basale; the stratum corneum is the most superficial layer of the epidermis.
In summary, only the statement that 'Cells within this layer are dead' accurately describes a key trait of the stratum corneum, while the other options either overgeneralize, misplace, or contradict fundamental epidermal biology.

Which of the below are traits associated with the stratum corneum?单项选择题

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