Non-keratinised stratified epithelium occurs in

Options

A. Vagina and cervix
B. Body cavity and anal canal
C. Vagina , cervix and buccal cavity
D. Vagina , cervix , buccal cavity and anal canal .

Answer

**Step-by-Step Text Solution:**

1. **Understanding Non-Keratinized Stratified Epithelium:**
- Non-keratinized stratified epithelium is a type of epithelial tissue that is composed of multiple layers of cells, where the outermost layer does not contain keratin, a protective protein.

2. **Characteristics of Non-Keratinized Stratified Epithelium:**
- This epithelium is characterized by living cells in the surface layer, which makes it different from keratinized stratified epithelium where the outermost cells are dead and filled with keratin.
- It is also impermeable to water, meaning it prevents the passage of water, which is crucial for maintaining moisture in certain body areas.

3. **Locations of Non-Keratinized Stratified Epithelium:**
- Non-keratinized stratified epithelium is found in areas that require protection but also need to remain moist. Common locations include:
- The lining of the esophagus
- The pharynx
- The buccal cavity (mouth)
- The vagina
- The cervix
- The anal canal

4. **Analyzing the Options:**
- The question provides four options:
- A) Vagina and cervix
- B) Body cavity and anal canal
- C) Vagina, cervix, and buccal cavity
- D) Vagina, cervix, buccal cavity, and anal canal
- Based on the locations identified, we can see that non-keratinized stratified epithelium is present in all the areas mentioned in option D.

5. **Conclusion:**
- Therefore, the correct answer is **option D: vagina, cervix, buccal cavity, and anal canal**.

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