Advertisements
Advertisements
प्रश्न
What is an epithelium? Enumerate the characteristic features of different epithelia.
उत्तर
Epithelial tissue is sheet of cells that covers the body surface or lines the body cavity.
- Simple epithelium is single layered.
- Squamous epithelium is made of flattened cells with irregular boundaries.
- Columnar epithelium is made of column like cells with round to oval nuclei at the base.
- Ciliated epithelium has ciilia at the free end.
- Compound epithelium is made of multi-layered cells.
संबंधित प्रश्न
Fill in the blank
Epithelial tissue is made of cells without any ...................... spaces.
Answer the following question.
Describe different types of cell junctions.
State whether true or false. If false, correct the statement.
Epithelial tissue is protective tissue in animal body.
The ciliated epithelium lines the______.
Prevention of substances from leaking across the tissue is provided by ______.
Intestine absorb the digested food materials. What type of epithelial cells are responsible for that?
Which is not a function of epidermis?
Fats are stored in human body as
A long tree has several branches. The tissue that helps in the side ways conduction of water in the branches is
Write true (T) or false (F)
The lining of blood vessels, lung alveoli and kidney tubules are all made up of epithelial tissue.
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 ______.
An epithelial layer does not allow the regulation of materials between the body and the external environment.
Glandular epithelium gives a stratified appearance.
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.
Write one point of difference between
Simple and compound epithelial tissue.
Epithelium founds in the lining of stomach and intestine is
