Question

What is the function of stratified squamous epithelial cells?
A. Transportation
B. Protection from abrasion
C. Protection from the organism
D. Separation

Answer 1

Stratified squamous epithelial cells is a tissue formed by multiple layers, resting on one another, on a basement membrane. This tissue is present all over the body. These cells are keratinized and non-keratinized basing on the cytoskeletal structure present in cells

Complete answer: Epithelial cells are those cells that make up the body surface and lines the hollow organs (e.g., small intestine, glomeruli in kidneys). Squamous cells are one of the types of epithelial cells characterized as thin and flat cells. There are two types of epithelial cells; simple form (one layer) and stratified form (multiple layers). Simple squamous epithelium is only involved in gas exchange. For example, these are found in the lungs, the walls of the alveoli, and are composed of simple squamous epithelial cells, which allow quick diffusion of oxygen to move out of the lungs and enter into the blood so that it can be transported to the rest of the body parts. Simple squamous cells are also functional in the process of filtration. If the squamous cells are in a stratified form, then it is a protective measure taken by the body. This is common in the skin (epidermis) and the oesophagus as the stratified version of the tissue is strong and resists abrasion. Thus, the main function of stratified squamous epithelial cells is to protect from abrasion.
So, the correct answer is option B.

Additional Information: The main function of stratified squamous epithelial cells is secretion and protection. It also protects the skin from physical wear and tears. It also secrets mucous, which keeps the skin moist. The mucous helps in maintaining the pH of the skin in the vaginal epithelium.

Note: The keratinized epithelium lines the region exposed to the environment, such as the palm and sole of the foot. The non-keratinized epithelium forms the lining of internal structures such as the walls of the lungs and digestive system. It is also found in the reproductive parts and respiratory tract.