Practice question · True or false
The outer layers of the epidermis consist of dead cells.
Hints
- Epithelium is avascular, so nutrients diffuse from beneath.
- Cells too far from that supply cannot be kept alive.
Show the answer
True
Why
True, epidermal cells are pushed outward away from their nutrient supply, fill with keratin and die. The dead outer layer is not a defect but the functional barrier: tough, waterproof and continuously replaced from beneath.
Practise Epithelial Tissue and Glands
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More questions on Epithelial Tissue and Glands
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