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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
The following statement is wrong. Rewrite it correctly by changing either one or two words.
Glandular epithelium is present in kidneys.
Name one place in living organisms where the following tissue is located:
Ciliated epithelium
How many types of epithelial tissues have you studied? Write their functions.
Give structure, types and functions in brief of the following:
Epithelial tissue
Name the tissues found
at the outer layer of skin.
Name the tissues found:
in the testes and ovaries.
Epithelial cells with cilia are found in ______ of our body.
Prevention of substances from leaking across the tissue is provided by ______.
Which is not a function of epidermis?
A long tree has several branches. The tissue that helps in the side ways conduction of water in the branches is
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 ______.
Glandular epithelium gives a stratified appearance.
Mention the type of epithelium seen in the alveoli of lungs.
Identify the following relationship
Cuboidal: Epithelial
Cardiac: ______
Granulocytes: ______
Osteocytes: ______
Identify the types of cell junctions that help to stop the leakage of the substances across tissue and facilitation of communication with neighbouring cells via rapid transfer of ions and molecules.
The body of sponges does not possess tissue level of organisation though it is made of thousands of cells. Comment.
Stratified epithelial cells have limited role in secretion. Justify their role in our skin.
How does a gap junction facilitate intercellular communication?
