Advertisements
Advertisements
प्रश्न
Give structure, types and functions in brief of the following:
Epithelial tissue
Advertisements
उत्तर
Epithelial tissue:
Structure: The cells of epithelium are compactly placed, tightly held together and form a continuous sheet. Epithelial cells are supported below on a basement membrane. These cells may be of different shapes and sizes.
Types:
There are two main types of epithelial tissues which are:
(a) Simple and
(b) Compound
Functions:
(i) It forms a protective layer over the body and protects the underlying cells from drying up, injury, germs and harmful chemicals.
(ii) It absorbs water and other nutrients inside the body.
(iii) Some of these cells secrete ear wax, mucus, milk and digestive juices.
APPEARS IN
संबंधित प्रश्न
Name one place in living organisms where the following tissues is located:
Squamous epithelium
The main function of the cuboidal epithelium is
Prevention of substances from leaking across the tissue is provided by ______.
The dead element present in the phloem is
If a potted plant is covered with a glass jar, water vapours appear on the wall of glass jar. Explain why?
Write true (T) or false (F)
Epithelial cells have a lot of intercellular spaces.
The ______ epithelium is also known as the pavement membrane.
Assertion: Materials are exchanged between epithelial and connective tissues by diffusion.
Reason: Blood vessels are absent in epithelial tissue.
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.
Classify and describe epithelial tissue on the basis of structural modifications of cells.
