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प्रश्न
Name the different cell junctions found in tissues.
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उत्तर
Different cell junctions that are found in tissues are:-
- Tight junctions: Here the plasma membrane of adjacent epithelial cells are held close together.
- Gap junctions: They are formed for the exchange of chemicals between adjacent cells.
- Adhering junctions: As the name suggests they stick together the neighbouring cells.
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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.
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Tissue lining the inner surface of the mouth.
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Ciliated epithelium
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in the testes and ovaries.
Answer the following question.
What is cell junction?
Answer the following question.
Describe different types of cell junctions.
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Name any four important functions of epithelial tissue and provide at least one example of a tissue that exemplifies each function.
What is an epithelium? Enumerate the characteristic features of different epithelia.
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The dead element present in the phloem is
Write true (T) or false (F)
Epithelial layer does not allow regulation of materials between body and external environment.
An epithelial layer does not allow the regulation of materials between the body and the external environment.
Assertion: Materials are exchanged between epithelial and connective tissues by diffusion.
Reason: Blood vessels are absent in epithelial tissue.
Mention the type of epithelium seen in the alveoli of lungs.
Identify the following relationship
Cuboidal: Epithelial
Cardiac: ______
Granulocytes: ______
Osteocytes: ______
Which type of tissue CORRECTLY matches with its location?
How does a gap junction facilitate intercellular communication?
