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प्रश्न
Some epithelia are pseudostratified. What does this mean?
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उत्तर
Pseudostratified epithelial cells are columnar but unequal in size. Although the epithelium is single-layered yet it appears to be multilayered due to the fact that nuclei lie at different levels in different cells.
संबंधित प्रश्न
What is the following and where do you find them in animal body?
Ciliated epithelium
Describe various types of epithelial tissues with the help of labelled diagrams
Fill in the blank
Epithelial tissue is made of cells without any ...................... spaces.
Name one place in living organisms where the following tissues is located:
Squamous epithelium
Name the tissues found:
in the testes and ovaries.
Which is not a function of epidermis?
Nerve cell does not contain
Describe the structure and function of different types of epithelial tissues. Draw diagram of each type of epithelial tissue.
In a certain type of cell division, the diploid number of chromosomes is reduced to half. This kind of division occurs in ______.
An epithelial layer does not allow the regulation of materials between the body and the external environment.
Sieve cells have no companion cells.
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: ______
Name the different cell junctions found in tissues.
Stratified epithelial cells have limited role in secretion. Justify their role in our skin.
How does a gap junction facilitate intercellular communication?
Match List I with List II.
| List I | List II |
| A. Mast cells | I. Ciliated epithelium |
| B. Inner surface of bronchiole | II. Areolar connective tissue |
| C. Blood | III. Cuboidal epithelium |
| D. Tubular parts of nephron | IV. specialised connective tissue |
Choose the correct answer from the options give below:
