Which one of the following is an example of epithelial tissue?
A. Lining of the digestive tract
B. Aponeuroses
C. Subcutaneous skin layer
D. Larynx
http://en.wikipedia.org/wiki/Epithelium
Subcutaneous skin layer
The correct answer is A. Lining of the digestive tract.
Epithelial tissue is one of the four main types of animal tissue. It covers the surfaces of organs, lines body cavities and tubes, and forms the outer layer of the skin. Its main functions include protection, absorption, secretion, and filtration.
To identify which one of the options is an example of epithelial tissue, we can examine the functions of epithelial tissue and compare them to the options given.
Option A, the lining of the digestive tract, is a good candidate. Epithelial tissue lines the entire length of the digestive tract, from the mouth to the anus. It provides a protective barrier and allows for absorption of nutrients and water.
Option B, aponeuroses, is actually a type of connective tissue that attaches muscles to bones.
Option C, the subcutaneous skin layer, is made up of a combination of connective tissue and adipose (fat) tissue, and does not primarily consist of epithelial tissue.
Option D, the larynx, is primarily composed of cartilage, connective tissue, and muscles, and does not consist predominantly of epithelial tissue.
Therefore, based on our analysis, the correct answer is A. Lining of the digestive tract.