MICROANATOMY

EPITHELIUM CONNECTIVE TISSUE SKIN

EPITHELIA GLANDS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The type of epithelial tissue that is present in areas where friction is common is called:
A
stratified columnar epithelium
B
stratified squamous epithelium
C
simple stratified epithelium
D
transitional epithelium
Explanation: 

Detailed explanation-1: -These tissues often have a protective role, and the extent of friction or abrasion often determines the number of layers of cells. Stratified squamous epithelia are found in skin, with many dead, keratinized cells providing protection against water and nutrient loss.

Detailed explanation-2: -Stratified squamous epithelium is found in – buccal cavity or oral cavity of mammals, the inner lining of cheeks, lips, hard palate, tonsils, pharynx, oesophagus, anal canal, the lining of the vagina, cornea of the eye.

Detailed explanation-3: -Simple squamous epithelium is a single thin layer of flattened cells with irregular boundaries. They line the walls of blood vessels and air sacs of lungs. Also, they involve in physiological processes like osmosis and diffusion.

Detailed explanation-4: -Stratified epithelia contain two or more layers of cells. The function of this type of epithelium is mostly protective-the higher the number of layers, the more protective it is. It is good at withstanding abrasion. This type of epithelium is constantly renewing itself.

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