Question

Which of the following is a correct pair? Ciliated epithelium - pillar like cells Squamous epithelium - presence of cilia Cuboidal epithelium - flat irregular cells Columnar epithelium - cube shaped cells

Answer 1

Epithelium or epithelial tissues belongs to one of the four major types of animal tissues which include nervous tissue, connective tissue and muscular tissue. Epithelial tissues are known to cover the outer surfaces of organs and blood vessels along with inner organs.

Complete answer:
Epithelial tissues are known to be derived from all the three embryological germ layers and are generally classified according to their shape, function and number of layers. The three major classification of epithelial tissues are-cuboidal, columnar and squamous. Cuboidal epithelium are those that appear cube-like and square in cross-section. Cuboidal epithelium are mostly seen in secretive tissue such as exocrine glands, lining of kidney tubules and lining of glands. Columnar epithelium are elongated with column-like shape and have a height four times of their width. Columnar epithelium is most commonly found in the lining of the stomach and small intestine. Squamous epithelium are thin and flat like plates and look polygonal when viewed from above. Squamous epithelium is mostly found lining the surfaces of skin, alveoli and cavities. Ciliated epithelium on the other hand is simple epithelium which consists of cilia that are capable of pulsatile beating in a certain direction. Ciliated epithelium is found in the airways as well as in the uterus.

So the correct pair is Cuboidal epithelium- flat irregular cells.

Note:
The epithelial tissues are of great importance as they serve many important roles such as protection from radiation, toxins, invasive pathogens; help in the regulation of chemicals to the body cavities, provide sensation and also release of important hormones into the circulatory system.