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differentiate between adhering junction, tight junction and gap junction

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Q. The cell junctions called tight, adhering and gap junctions are found in

The cell junctions namely tight, adhering and gap junctions are found in ______________.

Q. Select the correct option:

Which of the following statements about cell junctions are correct?
(i) All the cells of the epithelium are held together with little intercellular materials
(ii) In almost all animal tissues specialised junctions provide both structural and functional link between its individual cells
(iii) Tight junctions prevent substances from leaking across a tissue
(iv) Adhering junctions provide cementing to keep neighbouring cells together.
(v) Gap junctions provide cytoplasmic channels between cells for passage of ions, small molecules and sometimes big molecules.

Q. Read the following statements and choose the correct answer.

I. Gap junctions cement adjacent cells together.
II. Areolar tissue contains fibroblasts, macrophages and mast cells.
III. Tight junctions facilitate the cells to communicate with each other.
IV. Adhering junctions help to stop substances from leaking across tissues.
V. Cells of connective tissue except blood secrete fibers of structural proteins called elastin.

Q. Choose the correct answer from the options given below:
I. Tight junctions, gap junctions and adherens junctions are different types of cell junctions.
II. They are located in connective tissue, epithelial tissue, neural tissue and muscular tissue.

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