Intercalated discs contain ___________ and __________ Junction
A
tight
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B
adhering
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C
gap
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D
none
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Solution
The correct option is C
gap
Intercalated discs contain gap junctions and desmosomes. The gap junctions, which are protein-lined tunnels, allow direct transmission of the depolarizing current from cell to cell, across the chambers of the heart, so that the cells contract in unison.