What is the low-resistance pathway that permits electrical activity pass from cell to cell in myocardial tissue?

Question

Quizplus · Accepted Answer

Gap junctions are channels formed between adjacent cells that allow for low-resistance passage of ions and small molecules. This permits electrical activity to quickly spread from one cell to its neighboring cells, facilitating coordinated contraction of the myocardial tissue. Desmosomes provide mechanical strength by anchoring adjacent cells together, but do not facilitate electrical signaling. The septum is a structure in the heart that separates the left and right sides, but does not play a direct role in electrical signaling. T-tubules are invaginations of the plasma membrane that enable depolarization to rapidly spread to the interior of the cell, but do not facilitate passage of ions between cells.

What Is the Low-Resistance Pathway That Permits Electrical Activity Pass