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प्रश्न
How many types of epithelial tissues have you studied? Write their functions.
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उत्तर
There are two main types of epithelial tissues. These are:
(a) Simple and
(b) Compound
Simple epithelial tissue is further divided into six sub-groups which are:
(i) Columnar epithelium
(ii) Ciliated epithelium
(iii) Cuboidal epithelium
(iv) Squamous epithelium
(v) Glandular epithelium
(vi) Sensory epithelium
Compound epithelial tissue is of two types:
(i) Stratified epithelium
(ii) Transitional epithelium
Functions of epithelial tissue are:
(i) It forms a protective layer over the body and protects the underlying cells from drying up, injury, germs and harmful chemicals.
(ii) It absorbs water and other nutrients inside the body.
(iii) Some of these cells secrete ear wax, mucus, milk and digestive juices.
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संबंधित प्रश्न
Name the tissues found:
at the inner lining of the trachea.
Epithelial cells with cilia are found in ______ of our body.
Some epithelia are pseudostratified. What does this mean?
Intestine absorb the digested food materials. What type of epithelial cells are responsible for that?
Fats are stored in human body as
Write true (T) or false (F)
Epithelial layer does not allow regulation of materials between body and external environment.
Give reasons for
Meristematic cells have a prominent nucleus and dense cytoplasm but they lack vacuole.
In a certain type of cell division, the diploid number of chromosomes is reduced to half. This kind of division occurs in ______.
The ______ epithelium is also known as the pavement membrane.
Name the different cell junctions found in tissues.
