Question

which of the following structures is directly involved in the passage of electrical signals between cells as, for example, in the vertebrate heart? view available hint(s) tight junctions gap junctions anchoring junctions chemical synapses

Explanation:

Gap junctions are specialized inter - cellular connections that allow for the direct passage of electrical signals (ions and small molecules) between cells. In the vertebrate heart, they enable coordinated contraction by allowing electrical impulses to spread quickly from one cardiac muscle cell to another. Tight junctions seal cells together to prevent leakage. Anchoring junctions provide mechanical stability. Chemical synapses involve the release of neurotransmitters for signal transmission, not direct electrical signal passage like gap junctions.

Answer:

B. gap junctions