The function of the gap junction is to

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(D) : Most cells in animal tissues (with the exception of a few terminally differentiated cells such as skeletal muscle cells and blood cells) are in

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facilitate communication between adjoining cells by connecting the cytoplasm for rapid transfer of ions,small molecules and some large molecules.

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(D) : Most cells in animal tissues (with the exception of a few terminally differentiated cells such as skeletal muscle cells and blood cells) are in communication with their adjoining cells via gap junctions.At the place where a gap junction is present,the membranes of two adjacent cells are separated by a uniform narrow gap of about $2-4 \ nm$.The gap is spanned by channel-forming proteins called connexins,which allow inorganic ions and other small water-soluble molecules to pass directly from the cytoplasm of one cell to the cytoplasm of another cell.

Column $I$ (Terms)	Column $II$ (Features)
$A$. Exocrine gland	$I$. They help to stop substances from leaking across a tissue
$B$. Endocrine gland	$II$. Hormones are secreted directly into the fluid bathing the gland
$C$. Tight junctions	$III$. They perform cementing to keep neighbouring cells together
$D$. Adhering junctions	$IV$. Secretes mucus,saliva,earwax,oil,milk,digestive enzymes and other cell products

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