Correct Answer - Option 1 : Pharynx
Concept:
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Epithelium tissue: It is a type of tissue having a free surface, which faces either a body fluid or the outside environment and thus provides a covering or a lining for some part of the body. The cells are compactly packed with a little intercellular matrix.
- Epithelium tissues can be divided into two types
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Simple epithelium: It is composed of a single layer of cells and present as linings for body cavities, ducts & tubes
- on the basis of shape, it is of 4 types: squamous, cuboidal, columnar, & pseudostratified.
2. Compound epithelium: It is composed of 3-4 layers of cells. It is protective in function.
- Compound epithelium can be divided into two types based on their stretching ability: Transitional & Stratified epithelium
Explanation:
Stratified Squamous epithelium:
- The innermost cells are cuboidal or columnar in shape
- The middle layers are formed of polygonal cells
- Stratified squamous epithelium is of two types based on the presence of keratin protein
Keratinized Stratified Squamous epithelium: Keratin present
- The epidermis of skin & skin derivatives
Non - Keratinized Stratified Squamous epithelium: Keratin absent
- Pharynx, Cervix, Vocal cord, Cornea of the eye, etc
- The columnar epithelium is found in the lining of the stomach and intestine.
