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प्रश्न
Answer the following question.
Describe different types of cell junctions.
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उत्तर
The different types of cell junctions are as follows:
- Gap Junctions (GJs):
These are intercellular connections that allow the passage of ions and small molecules between cells as well as the exchange of chemical messages between cells. - Adherens Junctions (AJs):
They are involved in various signalling pathways and transcriptional regulations. - Desmosomes (Ds):
They provide mechanical strength to epithelial tissue, cardiac muscles and meninges. - Hemidesmosomes (HDs):
They allow the cells to strongly adhere to the underlying basement membrane. These junctions help maintain tissue homeostasis by signalling. - Tight junctions (TJs):
These junctions maintain cell polarity, prevent lateral diffusion of proteins and ions.
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संबंधित प्रश्न
Describe various types of epithelial tissues with the help of labelled diagrams
How many types of epithelial tissues have you studied? Write their functions.
Lining of small intestine is made up of ______.
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?
Differentiate between sclerenchyma and parenchyma tissues. Draw well labelled diagram.
______ epithelium is seen in sweat glands.
Sieve cells have no companion cells.
Epithelium founds in the lining of stomach and intestine is
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.
