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प्रश्न
Write true (T) or false (F)
Epithelial layer does not allow regulation of materials between body and external environment.
विकल्प
True
False
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उत्तर
False
Due to its permeability, epithelial layer plays an important role in regulating exchange of materials between body and external environment.
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संबंधित प्रश्न
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.
Name one place in living organisms where the following tissues is located:
Squamous epithelium
Answer the following question.
What is cell junction?
Answer the following question.
Describe different types of cell junctions.
Some epithelia are pseudostratified. What does this mean?
The dead element present in the phloem is
Write true (T) or false (F)
The lining of blood vessels, lung alveoli and kidney tubules are all made up of epithelial tissue.
Assertion: Materials are exchanged between epithelial and connective tissues by diffusion.
Reason: Blood vessels are absent in epithelial tissue.
Which type of tissue CORRECTLY matches with its location?
Stratified epithelial cells have limited role in secretion. Justify their role in our skin.
