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प्रश्न
Answer the following question.
Describe different types of cell junctions.
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
Name one place in living organisms where the following tissue is located:
Ciliated epithelium
Name any one body part where ciliated epithelium is found in humans. What is its function?
The ciliated epithelium lines the______.
Nerve cell does not contain
Write true (T) or false (F)
Epithelial cells have a lot of intercellular spaces.
Write true (T) or false (F)
Epithelial layer is permeable layer.
Give reasons for
Intercellular spaces are absent in sclerenchymatous tissues.
Explain simple epithelium and its types.
Name the different cell junctions found in tissues.
