Samous epithelial cells are found in the inner lining of

Squamous epithelial cells are thin, flat, and sheet-like in appearance [1]. In the human body, the inner lining of the esophagus is composed of non-keratinized stratified squamous epithelium, which provides a protective barrier against mechanical stress during swallowing [3]. This is similar to the lining of the mouth and cheek cells, which are also described as thin, flat squamous cells. In contrast, the small intestine is lined by simple columnar epithelium specialized for absorption and secretion [4]. The ducts of salivary glands are typically lined by stratified cuboidal or columnar epithelium, while the kidney tubules primarily consist of simple cuboidal epithelium [1]. Therefore, among the given options, only the esophagus contains a lining of squamous epithelial cells.

Sources

1. [1] Science ,Class VIII . NCERT(Revised ed 2025) > Chapter 2: The Invisible Living World: Beyond Our Naked Eye > Activity 2.3: Let us investigate > p. 12
2. [3] Science , class X (NCERT 2025 ed.) > Chapter 5: Life Processes > Activity 5.3 > p. 86
3. [4] https://training.seer.cancer.gov/anatomy/cells_tissues_membranes/tissues/epithelial.html