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प्रश्न
Describe the structure of epithelium.
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उत्तर
Epithelium is the simplest animal tissue that functions as a protective tissue in the animal body.Epithelial cells are tightly packed and contain very little or no matrix. It covers most of the organs and cavities within the body. It also forms a barrier to keep different body systems separate. The skin and lining of buccal cavity, blood vessels, alveoli, and kidney tubules are made of epithelial tissue. Epithelial cells lie on a delicate non-cellular basement membrane that contains a special form of matrix protein known as collagen.
Epithelium may be simple (composed of a single layer of cells) or stratified (made up of several layers of cells).
Epithelial tissue is classified into following four types depending upon the shape and function of its cells:
- Squamous epithelium.
- Cuboidal epithelium.
- Columnar/glandular epithelium.
- Ciliated epithelium.
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संबंधित प्रश्न
Fluid connective tissue of humans is ______.
Each of the tissues listed in Column A is related to one of the functions given in Column B. Match the lines correct pairs by drawing
| Column A (Tissue) | Column B (function) |
| (a) Epithelial tissue | i. Movement |
| (b) Connective issue | ii. Protection |
| (c) Vascular tissue | iii. messages |
| (d) Nervous tissue | iv. support |
| (e) Muscular Tissue | v. transport |
Fill in the blank
........................ connects one bone to another.
Fill in the blank
.................... tissue cushions and insulates the body.
Define the term of the biotic community
Write a short answer
What is an ecosystem?
Match the items given under column I with those given under.
| Column I | Column II | ||
| (i) | Bread mould | (a) | Has chlorophyll |
| (ii) | Spirogyra | (b) | Leaves with spores |
| (iii) | Moss | (c) | Naked seeds |
| (iv) | Fern | (d) | Saprophyte |
| (v) | Gymnosperm | (e) | Has rhizoids |
Choose the correct option.
________ is a gland which is both exocrine and endocrine.
Choose the correct option.
Find the odd one out.
Which of the following pair is not having similar epithelial tissue?
