A burn damages the outer layer of the skin. Which epithelial feature helps protect deeper tissues from physical injury?
Correct answer: A. Several layers of closely packed cells
- A. Several layers of closely packed cells
- B. A single layer of flat cells
- C. A network of contractile fibres
- D. A matrix rich in calcium salts
Explanation
Stratified epithelium has several cell layers and protects underlying tissues from abrasion and injury. A single flat layer is specialised for diffusion, whereas contractile fibres and calcium-rich matrix belong to other tissue types.
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About Cells and Tissues
Cells and tissues covers cell membranes, cytoplasm, organelles, cell division and the transport of substances into and out of cells. It also explains the four basic tissues, epithelial, connective, muscular and nervous, including their structure, functions and locations, with a distinction between tissue organization and organ structure.
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