Multiple choice

There is stratified squamous epithelium in the mouth cavity because

  1. it protects the mouth cavity

  2. it helps in the mastication of food

  3. it increases the surface area

  4. all of the above

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A Correct answer
Explanation

Stratified squamous epithelium is a multi-layered tissue that protects underlying structures from abrasion, mechanical stress, and pathogens. In the mouth cavity, it faces constant friction from chewing, food movement, and microbial exposure. The stratified arrangement allows surface cells to be worn away while deeper cells replace them, maintaining protection. This is why areas subjected to mechanical stress like the mouth, esophagus, and skin are lined with stratified epithelium rather than simple epithelium.

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