A mutation results in a developmental defect that stops the ionic current from flowing from cell to cell in cardiac muscle.Which structure(s) is/are most likely defective as a result of this mutation?

Question

Quizplus · Accepted Answer

Gap junctions are the structures responsible for allowing the flow of ionic current from cell to cell in cardiac muscle. If there is a mutation that stops the flow of current, it is likely that the gap junctions are defective. Sarcomeres, titin, actin and neuromuscular junctions are not directly involved in the ionic flow between cardiac muscle cells.

A Mutation Results in a Developmental Defect That Stops the Ionic