MICROANATOMY

Detailed explanation-1: -Gap junctions play a central role integrating the smooth muscle cell function by coordinating changes in both membrane potential and intracellular Ca2+ between adjacent smooth muscle cells (22–24).

Detailed explanation-2: -Smooth muscles contain gap junctions, to allow a rapid spread of depolarization, as in cardiac muscles. Skeletal muscle does not have any cell-cell junction.

Detailed explanation-3: -Smooth muscle contains gap junctions, to allow a rapid spread of depolarisation, as in cardiac muscle.

Detailed explanation-4: -Respiratory system: Airway smooth muscles, such as tracheal smooth muscle and bronchial smooth muscle, are known to form electrical syncytia by means of gap junctions.