Cardiac muscle cells contract together, what would happen if they did not?

The heart is a muscular organ, which is made up of blood vessels, and cardiac muscles. The cardiac muscle if not working properly will lead to heart failure or heart attack.

The functions of cardiac muscles include:

Thus, the cardiac muscle plays a crucial role in the contractions of the heart, and the failure of muscle would lead to a heart attack.

To know more about cardiac muscle, refer to the following link:

link

The intercalated discs allow the cardiac muscle fibers to contract in unison, producing a uniform contraction of the heart. If they were not functional, the cardiac muscle cells would not contract in unison and the heart would not have uniform, functional contractions.

I hope this answer helps you out! :D