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

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