Advertisements
Advertisements
प्रश्न
What is an epithelium? Enumerate the characteristic features of different epithelia.
Advertisements
उत्तर
Epithelial tissue is sheet of cells that covers the body surface or lines the body cavity.
- Simple epithelium is single layered.
- Squamous epithelium is made of flattened cells with irregular boundaries.
- Columnar epithelium is made of column like cells with round to oval nuclei at the base.
- Ciliated epithelium has ciilia at the free end.
- Compound epithelium is made of multi-layered cells.
संबंधित प्रश्न
Describe various types of epithelial tissues with the help of labelled diagrams
Based on the following information, identify the three types of epithelial tissue in the figures given below :
| a |  |
b |  |
c |  |
(1) Cuboidal epithelium: It consists of a single layer of cuboidal cells.
(2) Columnar epithelium: It is composed of tall, cylindrical cells with oval nuclei usually placed at the base of the cells.
(3) Ciliated epithelium: It consists of cells being hair-like cilia on their free surface.
The following statement is wrong. Rewrite it correctly by changing either one or two words.
Simple squamous epithelium is present in respiratory tract.
Name one place in living organisms where the following tissues is located:
Squamous epithelium
Name one place in living organisms where the following tissue is located:
Ciliated epithelium
Name the tissues found:
in the testes and ovaries.
Answer the following question.
Describe different types of cell junctions.
The ciliated epithelium lines the______.
Intestine absorb the digested food materials. What type of epithelial cells are responsible for that?
Which is not a function of epidermis?
Fats are stored in human body as
Nerve cell does not contain
Write true (T) or false (F)
The lining of blood vessels, lung alveoli and kidney tubules are all made up of epithelial tissue.
Give reasons for
Intercellular spaces are absent in sclerenchymatous tissues.
______ epithelium is seen in sweat glands.
Sieve cells have no companion cells.
Mention the type of epithelium seen in the alveoli of lungs.
Name the different cell junctions found in tissues.
Stratified epithelial cells have limited role in secretion. Justify their role in our skin.
