Question

An epithelial tissue which has thin flat cells, arranged edge to edge so as to appear like closely packed tiles, is found to be present at
A) Inner lining of intestine
B) Inner lining of stomach
C) Inner lining of fallopian tube
D) Inner lining of cheeks

Answer 1

Hint: Epithelial tissues are found all over the body. They cover all body surfaces, line body cavities and hollow organs, and make up the majority of gland tissue. They are responsible for a variety of functions such as defence, secretion, absorption, excretion, filtration, diffusion, and sensory reception.

Complete Answer:
The cells in epithelial tissue are densely packed, with little intercellular matrix. The cells have one free surface that is not in contact with other cells because the tissues form coverings and linings. A non-cellular basement membrane connects the cells to the underlying connective tissue opposite the free surface. This membrane is made up of carbohydrates and proteins.
This membrane is made up of carbohydrates and proteins that are secreted by epithelial and connective tissue cells. Epithelial cells can be squamous, cuboidal, or columnar in shape, and they can be organised in single or multiple layers.
Simple cuboidal epithelial tissue can be found in glandular tissue and kidney tubules. The stomach and intestines are lined with simple columnar epithelium. Pseudostratified columnar epithelium lines parts of the respiratory tract and some male reproductive tract tubes. Transitional epithelium can be stretched or distended. The glandular epithelium is specialised in the production and secretion of substances.
Squamous epithelium is an epithelial tissue composed of thin flat cells arranged edge to edge to resemble closely packed tiles. It protects moist surfaces that are subject to minimal friction wear and tear, such as the inner lining of the cheeks, the lining of blood vessels, the alveoli, and so on.

Therefore the correct answer is option (D) Inner lining of cheeks.

Note:
Functions of epithelial tissues are:
1) to shield the tissues beneath from radiation, desiccation, toxins, pathogen invasion, and physical trauma.
2) The regulation and exchange of chemicals between underlying tissues and a body cavity, as well as the secretion of hormones into the circulatory system, as well as the secretion of sweat, mucus, enzymes, and other products delivered by ducts to provide sensation.
3) Absorption of Water and digested food in the digestive canal.