Page 4 - 2- Lesson Notes- Animal Tissue- Epithelial

and ducts of salivary glands, where it

provides mechanical support.

 Epithelial cells often acquire additional specialisation as gland cells, which can
secrete substances at the epithelial surface.

Sometimes a portion of the epithelial tissue folds inward and a multicellular gland is

formed.

 This is glandular epithelium.

CILITAED EPITHELIUM

 In some columnar epithelial, it has cilia

(hair like projections) on the outer
surfaces.

 These cilia can move and their

movement pushes the mucus forward to
clear it.

 It is mainly found in respiratory system

Different Simple Stratified Columnar Ciliated Cuboidal Glandular
types of Squamous Squamous Columnar
epithelium
tissues
Structure
They have The They are Columnar They are These are
delicate cell epithelium the epithelial cube- special
lining and Squamous column- tissues shaped gland cells
possess a cells are like shape which have cells that can
flat thin arranged in tissues Cilia which are secrete
structure several present on involved substances
layers them in
absorption