Intercalated disks in cardiac muscle
A) are a type of gap junction.
B) allow all of the muscle fibers in an area to contract at the same time.
C) prevent the cells from pulling apart.
D) reduce the electrical resistance between cells allowing APs to pass more easily from cell to cell.
E) All of these are correct.

Question

Quizplus · Accepted Answer

Intercalated disks in cardiac muscle are a type of gap junction, allow all of the muscle fibers in an area to contract at the same time, and prevent the cells from pulling apart. Additionally, intercalated disks contain low electrical resistance and reduce the electrical resistance between cells allowing APs to pass more easily from cell to cell. Therefore, all of the choices are correct.

Intercalated Disks in Cardiac Muscle