Intercalated Discs Are Cell-Cell Junctions Found Between Cardiac Muscle Cells

question 7

Multiple Choice

Intercalated discs are cell-cell junctions found between cardiac muscle cells. One feature of these intercalated discs is that they contain a large number of gap junctions, which means that ________.

• A) an extension of smooth endoplasmic reticulum goes through the gap junction, making it continuous from one cardiac muscle cell to the next
• B) water ions and small molecules can readily pass from one cardiac muscle cell to the next
• C) cardiac cells can function independently when necessary
• D) RNA from one cardiac muscle cell can be transported into an adjacent cell through the gap junction