Question

Difference between cuboidal and columnar epithelium

Answer 1

cuboidal epithellium : 1) cell forms like cuboidal shape
                                   2)located in lining of kidney, ducts of salivary gland
                                   3) function: for mechanical support, strength & secretions

columnar epithellium: 1)cell forms like pillar or column like
                                   2) located in lining of intestine
                                   3) function : for absorption 

Answer 2

These cells are tall .

These cells are Cylindrical.

These cells are Pillar like.

The basal part of the cells which rests on the basement membrane bears oval nucleus.

The free ends present in these cells are known as microvilli .

They are present in our pharynx, stomach, intestine etc.

Squamous epithelium is made up of thin, flat, polygonal cells.

They are having disc like structure.

The nucleus is rounded, bulging and centrally located.

They form a structure as that of a floor tile .

The squamous epithelium are of two types : 

★ Simple Squamous tissue 
★ Stratified Squamous tissue

Location : 

They form the lining of nose, pericardial cavity, blood vessels, lung alveoli, coelomic cavity etc .

They are also found in the surface of the skin .

Functions : 

• Protection 

• Exchange of gases 

• Ultrafiltration

• Abrasion