Question

how many types of epithelial tissue?​

Answer 1

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Epithelial tissue :-

It is the primarily protective in function and covers all the organs and the tissues rests on a non - cellular basement membrane.

Types of epithelium tissue :-

1. Simple epithelium :- They are formed of single layer of cells.

→ Squamous epithelium- It consists of a layer of thin , flat , sac- like cells.

→ Cuboidal epithelium - It has cells which are polygonal in outline but appear Cuboidal in vertical section.

→ Columnar epithelium - Tall cells are present that are shaped like polygonal columns.

→ Ciliated epithelium - It consists of columnar and cubical cells bearing cilia.

→ Pseudo stratified - It covers the inner linings of trachea and large bronchi.

2. Compound epithelium - It consists of more than one layer of cells.

→ Stratified epithelium :- It has many layers of epithelial cells. It lines the inner surface of larger salivary and pancreatic ducts.

→ Transitional epithelium - This layer is much thinner and more stretchable than stratified epithelium.

→ Glandular epithelium - The cells of glandular epithelium are generally columnar or Cuboidal.

3. Specialised Junctions :-

→ Tight junctions

→ Interdigations

→ Gap junctions

→ Intermediate junctions

→ Desmosomes

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Answer 2

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Epithelial tissue :-

It is the primarily protective in function and covers all the organs and the tissues rests on a non - cellular basement membrane.

Types of epithelium tissue :-

1. Simple epithelium :- They are formed of single layer of cells.

→ Squamous epithelium- It consists of a layer of thin , flat , sac- like cells.

→ Cuboidal epithelium - It has cells which are polygonal in outline but appear Cuboidal in vertical section.

→ Columnar epithelium - Tall cells are present that are shaped like polygonal columns.

→ Ciliated epithelium - It consists of columnar and cubical cells bearing cilia.

→ Pseudo stratified - It covers the inner linings of trachea and large bronchi.

2. Compound epithelium - It consists of more than one layer of cells.

→ Stratified epithelium :- It has many layers of epithelial cells. It lines the inner surface of larger salivary and pancreatic ducts.

→ Transitional epithelium - This layer is much thinner and more stretchable than stratified epithelium.

→ Glandular epithelium - The cells of glandular epithelium are generally columnar or Cuboidal.

3. Specialised Junctions :-

→ Tight junctions

→ Interdigations

→ Gap junctions

→ Intermediate junctions

→ Desmosomes